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AP BIOLOGY MIDTERM
Review
505
Biology
11th Grade
01/19/2014

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Term
Hydrogen Bond
Definition
A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule.
Term
Hydrogen Bond
Definition
An intermolecular force that occurs between Hydrogen, Oxygen, Chlorine Nitrogen, or Fluorine of one molecule and Hydrogen.
Term
Hydrogen bonds occur
Definition
in polar subtances
Term
Hydrogen Bonds
Definition
arise from a difference of electronegativity.
Term
Allosteric Inhibition
Definition
enzyme has 2 active sites: one for substrate, other for an ihibitor. When inhibitor binds to allosteric site, enzyme changes active site and cannot catalyze reaction w/ substrate: feedback inhibition
Term
Adhesion
Definition
The attraction between different kinds of molecules.
Term
catalyst
Definition
substance that speeds up a chemical reaction
Term
endergonic/endothermic
Definition
energy absorbing
Term
enzymes
Definition
catalytic proteins (so organic) that speed up reactions by lowering the activation energy. Provides alternate pathways
Term
Energy coupling
Definition
Using Exergonic to power endergonic
Term
exergonic/exothermic
Definition
energy releasing
Term
law of conservation of energy
Definition
energy cannot by created or destroyed, only transferred.
Term
Metabolism
Definition
sum of all of the chemical reactions that take place in cells
Term
Noncompetitive Inhibition
Definition
enzyme contains >1 active site and substrates don't resemble each other. Binding of either substrate prevents other one from binding to the enzyme
Term
The induced-fit model
Definition
substrate induces enzyme to alter shape slightly so it can fit better
Term
Competitive inhibition
Definition
some compounds resemble normal substrate model, compete for same active site on the enzyme
Term
Saturated Fats
Definition
Single Bonds Only
Solid @ Room Temp.
(Straight)
Term
Unsaturated Fats
Definition
One or more double bonds
Liquid @ Room Temp.
(Kinked)
Term
Enzyme
Definition
Shape determines function
Term
Prokaryotes
Definition
first unicellular organisms.
Term
Aerobic Metabolism
Definition
used by the majority of living organisms today.
Term
Aerobic Metabolism
Definition
energy production using O2
Term
Aerobic Metabolism
Definition
More efficient than anaerobic metabolism it allowed organisms to grow larger.
Term
What is true about protein folding
Definition
If you change something in any stage, you are liable to change the whole protein
Term
Pyrimidines
Definition
One of two types of nitrogenous bases found in nucleotides. Cytosine (C), thymine (T), and uracil (U) are
Term
Purines
Definition
One of the two types of nitrogenous bases found in nucleotides. Adenine (A) and Guanine (G) are
Term
Phosphodiester Bond
Definition
formed from the condensation synthesis of the nucleotide links
Term
Primary Stage of Protein folding
Definition
The level of protein structure referring to the specific sequence of animo acids. Amino acids are joined forming polypeptide chains.
Term
Secondary Stage of Protein folding
Definition
The localized, repetitive coiling or folding of the polypeptide backbone of a protein due to hydrogen bond formation between peptide linkages.
Polypeptide chains for Alpha Helix and Beta Pleated Sheet bonding
Term
Tertiary Stage of Protein folding
Definition
Irregular contortions of a protein molecule due to interactions of side chains involved in hydrophobic interactions, ionic bonds, hydrogen bonds, and disulfide bridges. 3D shape is formed. Caused by interaction among r groups
Term
Quarternary Stage of Protein Folding
Definition
The particular shape of a complex, aggregate protein, defined by the characteristic three-dimensional arrangement of its constituent subunits, each a polypeptide. Multiple polypeptide interactions occur
Term
Denaturization
Definition
the breaking down of a protein structure caused by charge of temperature of PH
Term
Optimal Range
Definition
place where protein or enyzme works the best
Term
Characteristics of a Prokaryote
Definition
No nucleus
Single celled
Circular DNA
No mitochondria
Term
Characteristics of a Eukaryote
Definition
Nucleus
Single-Celled
Chromosomes
All Membrane organelles
ER, Rough & Smooth
Term
Cell respiration is __
Definition
exothermic
Term
Photosynthesis is ___
Definition
Endothermic
Term
Sept. 26
Which bonds are broken for water to vaporize?
Definition
Hydrogen Bonds
Term
Sept. 26
The slight negative charge at one end of one water molecule is attracted to the slightly positive charge of another water molecule. What is this attraction called?
Definition
Hydrogen bond
Term
What allows for water's property of cohesiveness?
Definition
Hydrogen bonds
Term
Desert Rabbits are adapted to the warm climate because their large ears aid in the removal of heat due to the
Definition
High heat vaporization of water
Term
Temperature usually increases as water condenses. Which behavior of water is most directly responsible for this phenomenon?
Definition
The release of heat by the formation of hydrogen bonds.
Term
Which of the following solutions has the greatest concentration of hydrogen ions (H+)?
Definition
Gastric juice at PH2
Term
Hydrophobic substances such as vegetable oil are
Definition
Nonpolar substances that repel water molecules.
Term
Why are hydrocarbons insoluble in water?
Definition
The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages.
Term
DNA Replication needs
Definition
RNA PRIMER
Term
DNA POLYMERASE
Definition
Enzyme that makes strands of DNA
Term
Protons are the same as
Definition
Hydrogen Ions
Term
Hydrogen bonds
Definition
share a H atom
Term
Hydrogen Bond
Definition
Weaker interaction than covalent bond.
Term
Hydrogen Bond
Definition
The negatively charged oxygen atom of one water molecule is attracted to the positively charged hydrogen atoms.
Term
Hydrogen Bond
Definition
Can form between the different parts of the same large molecule.
Term
Heat Capacity ( Cohesion )
Definition
Hydrogen bonds attribute to the high heat capacity of water.
Term
Raising the temperature will?
Definition
Break hydrogen bonds.
Term
Example of error in protein folding
Definition
(Sickle Cell)
Point Mutation in Primary stage.
Messes with Hemoglobin
Term
Example of Hydrophobic
Definition
Phosopholipid Bilayer Tail
Term
Example of Hydrophilic
Definition
Phospholipid Bilayer Head
Term
PH Scale thingy
Definition
PH by 10s Exponential
Term
Polar bonds
Definition
opposite charges are separated at the two ends or poles of the bond.
Term
Polar bonds
Definition
greatly influence the interactions they have with other polar molecules
Term
Polarity of water molecules
Definition
has significant effects on its physical properties and chemical reactivity.
Term
Carboxyl group
Definition
makes compound hydrophilic and polar.
Term
Hydrophilic
Definition
Water-Loving
Term
Polar Molecule
Definition
One that has an unequal distribution of charge which creates a positive and negative side to the molecule.
Term
Non-Polar
Definition
Hydrophobic
Term
Non-Polar
Definition
Not ionizing when dissolved in water.
Term
Energy is absorbed
Definition
to break bonds
Term
Energy is released
Definition
to form bonds
Term
Which of the following best describes the flow of information in eukaryotic cells?
Definition
DNA-> RNA-> proteins
Term
Altering which of the following levels of structural organization could change the function of a protein?
Definition
Primary,Secondary,Tertiary and Quaternary.
Term
What would be an unexpected consequence of changing one amino acid in a protein consisting of 325 amino acids?
Definition
The primary structure of the protein would be changed. The tertiary structure of the protein might be changed. The biological activity or function of the protein might be altered.
Term
The function of each protein is a consequence of its specific shape. What is the term used for a change in a protein;s three-dimensional shape or conformation due to disruption of hydrogen bonds, disulphide bridges, or ionic bonds?
Definition
Denaturation
Term
The tertiary structure of a protein is the
Definition
unique three-dimensional shape of the fully folded polypeptide.
Term
The alpha helix and the Betta pleated sheet are both common polypeptide forms found in which level of protein structure?
Definition
Secondary
Term
Which bonds are created during the formation of the primary structure of a protein?
Definition
Peptide bonds
Term
Selective Permeability
Definition
allows the passage of some materials but not others
Term
Passive Transport
Definition
does not require energy for movement
Term
Active Transport
Definition
requires energy for movement
Term
DNA
Definition
consists of two strands running in opposite directions that are held together by hydrogen bonds between purines on one strand and pyrimidines on the opposing strand. The two strands in a double molecule are coiled in a double helix
Term
Hypotonic
Definition
external environment lower than internal
Term
Osmosis
Definition
movement of water molecules towards a state of equilibrium
Term
Dehydration reaction are used in forming which of the following compounds?
Definition
triacylglycerides, polysaccharides, and proteins
Term
Polysaccharides, lipids, and proteins are similar in that they
Definition
are synthesized from monomers by dehydration reactions.
Term
The bonding of two amino acid molecules to form a larger molecule requires which of the following?
Definition
removal of a water molecule
Term
There are 20 different amino acids. What makes one amino acid different from another?
Definition
different side chains (R groups) attached to an alpha carbon
Term
Which of the following is true of cellulose?
Definition
It is a major structural component of plant cell walls.
Term
Which of the following best summarizes the relationship between dehydration relations and hydrolysis?
Definition
Dehydration reactions assemble polymors, and hydrolysis reactions break down polymers and Macromolecular synthesis occurs through the removal of water and digestion occurs through the addition of water.
Term
Which of the following statements best summarizes the structural differences between DNA and RNA?
Definition
DNA nucleotides contain a different sugar than RNA nucleotides
Term
Cohesion
Definition
capacity of water molecules to resist coming apart from one another when placed under tension
Term
Adhesion
Definition
tendency of water to be attracted to each other.
Term
High Heat of Vaporization
Definition
A lot of heat is required to change from liquid to gas
Term
High Surface Tension
Definition
The property of the surface of a liquid that allows it to resist an external force due to the cohesive nature of its molecules.
Term
Buffering Capacity
Definition
Ability for a substance to act as both an acid and base.
Term
Hydrocarbon molecules
Definition
nonpolar , and tend to aggregate with one another father than polar water molecules insoluble . They are hydrophobic.
Term
if you change one amino acid
Definition
you change the protein
Term
Denaturization
Definition
Not permanent
Term
Hydrolysis
Definition
a reaction that breaks down compounds by the addition of H20
Term
Cohesion
Definition
capacity of water molecules to resist coming apart from one another when placed under tension
Term
Adhesion
Definition
tendency of water to be attracted to each other.
Term
High Heat of Vaporization
Definition
A lot of heat is required to change from liquid to gas
Term
High Surface Tension
Definition
The property of the surface of a liquid that allows it to resist an external force due to the cohesive nature of its molecules.
Term
Buffering Capacity
Definition
Ability for a substance to act as both an acid and base.
Term
Hydrocarbon molecules
Definition
nonpolar , and tend to aggregate with one another father than polar water molecules insoluble . They are hydrophobic.
Term
if you change one amino acid
Definition
you change the protein
Term
Denaturization
Definition
Not permanent
Term
Hydrolysis
Definition
a reaction that breaks down compounds by the addition of H20
Term
Denaturization
Definition
alteration of a protein shape through some form of external stress, in such a way that it will no longer be able to carry out its cellular function
Term
Amino Acid
Definition
carbon center surrounded by an amino group , a carboxyl group, a hydrogen and an R group.
Term
Nucleic Acids
Definition
DNA and RNA nucleotide monomers
Term
Lipids
Definition
organic compounds used by cells as long term energy storers, or building blocks.
Term
Primary Structure bond
Definition
Peptide
Term
Primary Structure
Definition
Amino Acid monomers are joined forming polypeptide chains.
Term
secondary structure bond
Definition
hydrogen
Term
secondary structure
Definition
Polypeptide chains may form alpha helixes and beta pleated sheets.
Term
Tertiary structure
Definition
three dimensional arrangement caused by interaction among R groups.
Term
Plasmodesmata
Definition
allows for the integration of thousands of cells within a single plant organ.
Term
Plasmodesmata function
Definition
holds cells together to form Tissue
Term
Plasmodesmata function 2
Definition
contributes to physical properties of tissue
Term
Plasmodesmata function 3
Definition
may act as filters for tissue
Term
Plasmodesmata function 4
Definition
help orient cell movements
Term
Gap junctions
Definition
the animal equivalent of the plant's plasmodesmata
Term
desmosomes
Definition
lock adjacent animal cells together but still allow materials to move around the outside of the cells.
Term
Cell junctions
Definition
prevent materials from going between adjacent cells.
Term
Fluid Mosaic Model
Definition
Phospholipids, proteins, glycolipids, glycoproteins
Components are able to move through the membrane.
Term
How can fluidity be reduced in the Phospholipid bilayer?
Definition
cholesterol , saturation of fatty acids , protein content , and temperature.
Term
Selective Permeability
Definition
allows the passage of some materials but not others.
Term
Passive transport
Definition
does not require energy for transport
Term
active transport
Definition
requires energy for movement.
Term
Passive Transport Examples
Definition
Simple Diffusion , Osmosis
Term
Simple Diffusion
Definition
Random movement of molecules towards equilibrium
Term
Osmosis
Definition
movement of water molecule toward a state of equilibrium
Term
Hypertonic
Definition
solute external more than internal
Term
Hypotonic
Definition
solute internal more than external
Term
Isotonic
Definition
solute balanced internal and external
Term
Animal Cell will burst
Definition
in a hypotonic solution
Term
Plant Cell will be fine in
Definition
a hypotonic solution
Term
Why will a plant cell be fine in a hypotonic solution?
Definition
as the membrane moves out the cell wall pushes back in, this concept is know as turgor pressure.
Term
turgor pressure
Definition
as the membrane moves out the cell wall pushes back in.
Term
CANNOT DIFFUSE THROUGH THE MEMBRANE
Definition
Large, Polar, charged, amino acids, sugars, ions, and water molecules.
Term
Active Transport
Definition
Requires energy to pump substances AGAINST the concentration gradient.
Term
Two types of Active Transport?
Definition
Primary , Secondary
Term
Primary Active Transport
Definition
direct use of ATP
Term
ATP
Definition
Adenosine Tri-Phosphate
Term
Adenosine contains?
Definition
Carbon
Term
Adenosine
Definition
Pre-cursor molecule
Term
Secondary Active Transport
Definition
A concentration gradient that was established by ATP used to drive Active Transport.
Term
Hydrolysis of ATP Produces
Definition
ADP + P i
Term
P i
Definition
Inorganic phosphate
Term
The reverse of hydrolysis of ATP
Definition
Cell respiration
Term
Once a terminal phosphate is separated it is now a
Definition
Inorganic phosphate
Term
As the level of ATP falls so will the level of
Definition
glucose
Term
Endocytosis
Definition
taking in of molecules or cells by the eukaryotic cell
Term
phagocytosis
Definition
cell intakes large particles or cells
Term
pinocytosis
Definition
absorbs liquids and dissolved particles
Term
Receptor mediated endocytosis
Definition
triggered by a specific molecule (ligand)
Term
ligand
Definition
any molecule that bonds to a receptor and causes a cellular response.
Term
In Order for cholesterol to be made available to cells for use in cell membranes..
Definition
LDL (good cholesterol) must be absorbed by the cell through , Receptor Mediated Endocytosis
Term
Exocytosis
Definition
materials that are packaged inside the cell are removed or exported from the cell through this process
Term
Signal Transduction Pathway
Definition
series of cellular reaction that begin with the stimulus of a receptor molecule by a physical or chemical signal and ends with a cellular response.
Term
Signal Transduction Pathway
Definition
critical for cells to interact with a changing environment
Term
Signal Transduction Pathway
Definition
critical to maintain homeostasis
Term
Brackets are a symbol of
Definition
concentration
Term
In an Isotonic solution
Definition
there is movement but at the same rate
Term
Flacid
Definition
limp
Term
turgod
Definition
stiff
Term
White Blood Cells
Definition
phagocytes
Term
Potential Energy
Definition
is stored in chemical bonds
Term
Potential Energy
Definition
can be released by Metabolic Pathways of cells
Term
c6 h12 o6 + o2 ---->
Definition
ATP CO2 H20
Term
Metabolic Pathway
Definition
divided into a series of separate reactions, controlled release rather than one large energy transformation.
Term
Individual Reactions in a Metabolic Pathway
Definition
catalyzed by specific enzymes
Regulation of overall pathway by checkpoints at intermediate steps, Enzyme Specificity
Term
Most Metabolic Pathways
Definition
Similar in all organisms.
-Link for ancestry
-conserved/ selected for
Term
Eukaryotes
Definition
use compartmentalized structures to segregate individual reactions of a pathway (regulation) ( Different environments that favor different reactions/enzymes)
Term
Metabolic Enzymes
Definition
can be inhibited or activated to control the overall rate of the pathway
Term
G
Definition
free energy, or energy available to do work
Term
exergonic
Definition
energy releasing reaction
Term
endergonic
Definition
energy consuming reaction
Term
Cell Respiration is a
Definition
exergonic reaction
Term
Delta G
Definition
change in free energy
Term
-G
Definition
exergonic
Term
+G
Definition
endergonic
Term
coupling
Definition
use of an exergonic reaction to power an endergonic reaction.
Term
Substrate level phosphorylation
Definition
P i (inorganic phosphate) is transferred directly to ADP. Occurs in glycolysis
Term
glycolysis
Definition
step one of cell reparation
Term
Oxidative Phosphorylation
Definition
use of a series of Redox Reactions and chemiosmosis to phosphorylate ADP --> ATP
Term
Redox Reactions
Definition
Reactions involving the transfer of electrons
Term
Oxidation
Definition
half reaction of substance losing electrons
Term
Reduction
Definition
half reaction of a substance gaining electrons
Term
Oxidizing Agent
Definition
item being reduced
Term
Reducing agent
Definition
item being oxidized
Term
Reduced substances contain more energy then oxidized substances because of
Definition
more electrons
Term
Electron Carriers
Definition
two very important molecules to transfer electrons
Term
Electron Carriers exist in how many forms?
Definition
2
Term
Electron Carriers forms
Definition
The oxidized form ( low energy)
The reduced form ( high energy)
Term
Electron Carriers
Definition
NAD+(oxidized) and NADH (reduced)
FAD (oxidized) and FADH2 (reduced)
Term
Substrate level phosphorylation
Definition
makes ATP
Term
ADP traps energy to produce
Definition
ATP
Term
Electron Carriers
Definition
trap electrons in redox reactions
Term
Electron Carriers
Definition
deposit their elections later in this pathway to help produce more ATP
Term
What are the molecules that all living things are made up of?
Definition
Proteins Lipids Carbohydrates Nucleic Acids
Term
Cell Respiration
Definition
catabolism of glucose but can occur with the catabolism of lipids and proteins
Term
Products of Glycolysis
Definition
2 NADH
2 ATP
2 Pyruvates
Term
Aerobic Condition
Definition
Presence of O2
Term
Aerobic Condition
Definition
used by Eukaryotic cells
Term
Glycolysis
Definition
6 carbon glucose is split into two 3 carbon molecules of pyruvate
Term
Pyruvate Oxidation
Definition
pyruvate oxidized into two carbon molecules called acetyl coA - (2)NADH -(2)CO2
Term
CoA
Definition
coenzyme A
Term
ose
Definition
sugar
Term
ase
Definition
enzyme
Term
Glycolysis
Definition
occurs in cytoplasm
Term
Glycolysis
Definition
is a Pathway consists of 10 "enzyme mediated" reactions
Term
Glycolysis can be divided into two stages
Definition
Energy Investment , Energy Harvest
Term
Energy Investment
Definition
ATP must be spent to breakdown glucose
Term
Energy Harvest
Definition
ATP is recovered and is NAD+ is reduced to NADH
Term
When Pyruvate is oxidized it becomes
Definition
acetate
Term
Step one of the Citric Acid Cycle
Definition
the separation of Acetyl CoA and the attachment of the Acetyl group to a molecule called Ocalocetate.
Term
1 Turn of the Citric Acid Cycle produces
Definition
3NADH, 1FADH2 , ATP , 2 CO2
Term
Mitochondria
Definition
powerhouse of the cell
Term
Mitochondria
Definition
double membrane bound organelle
Term
Electro chemical Gradient
Definition
creates potential energy
Term
Oxygen
Definition
final electron acceptor
Term
Proton Pumps
Definition
use the energy from electrons to push protons against the gradient
Term
Anaerobic condition
Definition
lack of O2
Term
Cells are produced through two methods
Definition
Mitosis , or Meiosis
Term
Mitosis
Definition
Cell Division, Asexual reproduction, Daughter cells are genetically identical to parent cells.
Term
Mitosis
Definition
1 Replication
1 Divison
2 Daughter Cells genetically identical to parent cell
Term
Mitosis
Definition
has a major role in growth and repair of organisms
Term
Meiosis
Definition
cell division that produces gametes
Term
Gametes
Definition
contain half the genetic information of parent cells.
Term
Gametes
Definition
are used in sexual reproduction.
Term
Sexual Reproduction
Definition
requires the fusion of specialized cells called gametes
Term
Gametes
Definition
cells that result from Meiosis
Term
Meiotic cell divisions results in...
Definition
cells that contain half the amount of DNA of the parent cell and in many cases the DNA is different
Term
Meiosis
Definition
1 Replication
2 Divisions
4 Daughter Cells with ½ the DNA as parent cell
Term
Chromosomes
Definition
A single DNA molecule and the proteins that help organize the molecule.
Term
Somatic Cells
Definition
Body Cells , cells that do not specialize in reproduction.
Contain 2x the amount of DNA as sex cells
Term
N
Definition
is the number of sets of chromosomes
Term
Homologous Pairs
Definition
Somatic cells that are usually Diploid, the mother's chromosome and the corresponding father's chromosome
Term
Diploid
Definition
2 sets of chromosomes or 2 copies of each chromosome
Term
Haploid
Definition
single set of chromosomes or one copy
Term
Binary Fission
Definition
occurs in prokaryotes
Term
Mitosis
Definition
reproduction of a single celled organism
growth and repair in multicellular organisms.
Term
R checkpoint
Definition
Restriction checkpoint
Term
In the cell cycle if synthesis occurs...
Definition
it must continue and reduce
Term
4 stages of the cell cycle
Definition
G1 S G2 Mitotic Phase ( Mitosis and Cytokinesis)
Term
kinase
Definition
cause phosphorylation
Term
cyclin
Definition
signaling molecule
Term
Allosteric Regulation
Definition
You have an inhibitor or an activator that binds to an enzyme not at its active site to change the function of the enzyme.
Term
CDK
Definition
Cyclin dependent kinase
Term
MPF
Definition
Mitosis promoting factor
Term
Levels of _____ don't change
Definition
CDK
Term
Density Dependent Inhibition
Definition
Mitosis can be inhibited based upon density
Term
Cyclin is directly proportional to
Definition
MPF
Term
Interphase (Cell cycle)
Definition
46 Chromosomes.
Duplicating
Term
Prophase
Definition
chromosomes doubled up to 92.
Condensing
Term
Prometaphase
Definition
Centrosomes split into centrioles , centrioles migrate to the poles to produce spindles. Nucleus dissolves and microtubules attach to centromeres
Term
Metaphase
Definition
Chromosomes begin to align at the middle of the cell
Term
Anaphase
Definition
Separated Chromosomes pulled apart divide
Term
Telophase
Definition
Microtubules disappear, division begins
Term
cytokinesis
Definition
Two daughter cells split, each with 46 chromosomes.
Term
Meiosis allows for
Definition
increase in genetic variation
Term
Genetic recombination
Definition
occurs in mitosis, happens in prophase , good for population
Term
Law of segregation
Definition
the way that chromosomes move into the gametes
Term
Mitosis is ____
Definition
2^x x= # of divisions
Term
Binary Fission
Definition
Replication and division @ the same time
Term
Mitosis
Definition
organized method of distributing chromosomes
Term
A cell in G1 compared to G2
Definition
same # of chromosomes 2x the DNA
Term
centromere to chromosomes ratio
Definition
1:1
Term
metaphase to anaphase ratio
Definition
1:2
Term
Independent Assortment
Definition
The way they align, and Creates variation which is necessary for natural selection in population.
Term
tubulin
Definition
protein monomer
Term
dimerization
Definition
activation fo proteins
Term
G0 also known as GNOT
Definition
stage that does not divide
Term
Test Cross
Definition
100% Homozygous Dominant/ Heterozygotes
Term
Di hybrid cross phono ratio
Definition
9:3:3:1 , or 9:3:4
Term
Monohybrid Cross
Definition
3:1 Pheno
1:2:1 Geno
Term
Genes
Definition
stretch of chromosomes/ segment of DNA
Term
Alleles
Definition
variation of a gene
Term
Mono Proves
Definition
Segregation
Term
Di proves
Definition
independent assortment
Term
Epistasis
Definition
Many genes control one trait
Term
Monohybrid cross
Definition
the mating of two individuals
Term
Di hybrid cross
Definition
between first generation offspring
Term
Recombination frequency
Definition
recombinant progeny/ total progeny
greater for loci that are farther apart on chromosome.
Term
Plasmid
Definition
independent of normal genome, small # of genes replicate on their own
Term
Conjugation
|SEX PILUS|
Definition
1 Bacterial cell and another come in close proximity and build a sex pills when bacteria reproduces genome will move from genome to corresponding genome. DNA duplicates , builds a bridge, sends it over to the other one. Will swap out recessive genes.
Term
Plasmids
Definition
act as vehicles for traits.
Term
Autosomal
Definition
not affected by gender.
Term
genome
Definition
organisms complete set of all genetics
Term
Nuclear DNA
Definition
located in Nucleus
Term
Every cell in your body has the same exact genome but
Definition
different functions
Term
polymer
Definition
a long molecule that is made up of monomers
Term
Amino Acids
Definition
protein/ polypeptide chain
Term
Monosaccharides
Definition
carbohydrates
Term
Nucleotides
Definition
DNA
Term
Glycogen
Definition
animal polymer made up of glucose
Term
Cellulose
Definition
plant polymer made in cell wall
Term
monomer of starch
Definition
glucose
Term
starch
Definition
a polysaccharide
Term
Cellulose is
Definition
a structural component
Term
Starch is
Definition
an energy source
Term
Dehydration Synthesis
Definition
builds polymers through the removal of water
Term
Hydrolysis
Definition
breaks down by addition of water
Term
2 monosaccharides
Definition
disaccharide
Term
Hydrocarbon
Definition
non polar (insoluble)
Term
To find the change in heat always
Definition
Subtract initial from Final
( F - I )
Term
Ice
Definition
less dense than water
Term
Denaturation
Definition
breaking down of protein structure by changes in temp or PH change
Term
optimal range
Definition
point where the protein works best
Term
Enzymes
Definition
have different optimal ranges and specificity.
Term
Translation
Definition
The synthesis of a polypeptide chain from a segment of RNA.
Term
Transcription
Definition
The synthesis of mRNA (messenger RNA) from a DNA template.
Term
How many amino acids are there?
Definition
20
Term
The steps of transcription are...
Definition
Initiation, elongation, termination, and modification
Term
Initiation of transcription is because a
Definition
RNA polymerase reaches a promoter
Term
Most genes in the human genome are
Definition
non coding
Term
Rough ER
Definition
produces proteins that are exported from the cells
Term
Golgi
Definition
packages proteins
Term
Smooth ER
Definition
can modify carbohydrates & lipids and detoxification
Term
Mitochondria
Definition
cell respiration
Term
vacuole
Definition
storage unit
Term
ribosomes
Definition
builds proteins that remain in the cell
Term
ribosomes
Definition
active site of protein synthesis
Term
cell membrane
Definition
selective permeability
Term
Extracellular matrix
Definition
Fibrous network that provides anchorage for cells.
Term
cytoskeleton
Definition
attached to Nucleus so a tug on the ex cell matrix will transfer through the cytoskeleton to the nucleus which regulates gene expression.
Term
cholesterol
Definition
regulates fludity
Term
Small Non polar substances
Definition
can diffuse
Term
Facilitated Diffusion
Definition
High to low through a protein
Term
Metabolism
Definition
sum total of all chemical reactions in the body
Term
catabolism
Definition
breakdown of substances
Term
catabolic reactions
Definition
usually exergonic
Term
Anabolism
Definition
building of substances
Term
1st law of thermodynamics
Definition
cannot create nor destroy energy
implication : Organisms need to find energy
Term
2nd law of thermodynamics
Definition
moves towards entropy (disorder)
implication : We are continually increasing the entropy of the universe.
Term
Chemical Equilibrium
Definition
When the rate of forward reaction = the rate of backward reaction.
Term
Negative Feedback
Definition
Product turns off the process
Term
Positive feedback
Definition
product turns on the process, and or makes it work more often.
Term
Allele
Definition
An alternative version of a gene
Term
Trait
Definition
a variant for a character
Term
Monohybrid cross
Definition
a cross between individuals heterozygous for a single character
Term
character
Definition
a heritable feature that varies among individuals
Term
gene
Definition
a heritable unit that determines a character and can exist in different forms
Term
Homozygous
Definition
having two identical alleles for a gene
Term
Dominant Allele
Definition
determines phenotype in heterozygote
Term
Recessive Allele
Definition
Has no effect on phenotype in a heterozygote
Term
Phenotype
Definition
an organism's appearance or observable traits
Term
Genotype
Definition
the genetic makeup of an individual
Term
test cross
Definition
a cross between an individual with an unknown genotype and a homozygous recessive individual
Term
Heterozygous
Definition
Having two different alleles of a gene
Term
All of the following are part of prokaryotic cell except
Definition
an endoplasmic reticulum
Term
Which of the following is major cause of the size limits for certain types of cells?
Definition
the need for a surface area of sufficient area to allow the cell's function
Term
Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
Definition
proteins
Term
Which typ elf the organelle is primarily involved in the synthesis of oils, phospholipids, and steroids?
Definition
smooth endoplasmic reticulum
Term
In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?
Definition
lysosome
Term
Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large complex lipids, primarily because these lipids are not properly broken down. Which cellular organelle must be involved in this condition?
Definition
the lysosome
Term
The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells?
Definition
smooth ER
Term
Which of the following is a compartment that often takes up much of the volume of a plant cell?
Definition
vacuole
Term
Which is one of the main energy transformers of cells?
Definition
mitochondrion
Term
Which of the following contains its own DNA and ribosomes?
Definition
mitochondrion
Term
Which of the following are capable of converting light energy to chemical energy?
Definition
chloroplasts
Term
Which of the following relationships between cell structures and their respective functions is correct?
Definition
cell:support:protection
Term
Ions can travel directly from the cytoplasm of an adjacent cell through
Definition
gap junctions
Term
Which structure is common to plant and animal cells?
Definition
mitochondrion
Term
Which of the following is present in a prokaryotic cell?
Definition
ribosome
Term
Which of the following processes includes all others?
Definition
passive transport
Term
Which of the following factors would tend to increase membrane fluidity?
Definition
a greater proportion of unsaturated phospholipids
Term
Which of the following is a reasonable explanation for why unsaturated fatty acids help keep any membrane more fluid at lower temperatures?
Definition
The double bonds form kinks in the fatty acid tails , forcing adjacent lipids to be further apart.
Term
Of the following functions which is the most important for the glycoproteins and glycolipids of animal cell membranes?
Definition
a cell's ability to distinguish one type of neighboring cell from another
Term
Which of the following is a characteristic feature of carrier protein in a plasma membrane?
Definition
It exhibits a specificity for a particular type of molecule
Term
Which of the following statements is correct about diffusion?
Definition
It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
Term
A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water, equal to the volume of blood lost, is transferred directly into one of his veins. What will be the most probable result of this transfusion?
Definition
The patient's red blood cells will swell because the blood fluid is hypotonic compared to the inside of cells.
Term
Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are
Definition
hypertonic to fresh water but hypotonic to the salt solution
Term
A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test tube of water containing 0.02 molar glucose. Assuming that glucose is not actively transported into the cell, which of the following terms describes the tonicity of the external solution relative to the cytoplasm of the cell?
Definition
isotonic
Term
You are working on a team that is designing a new drug. In order for this drug to work, it must enter the cytoplasm of specific target cells. Which of the following would be a factor that determines whether the molecule enters the cell?
Definition
similarity of the drug molecule to other molecules transported by the target cells
Term
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose rich food into their glucose poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells?
Definition
facilitated diffusion
Term
White blood cells engulf bacteria through what process?
Definition
phagocytosis
Term
In receptor-mediated endocystosis, receptor molecules initially project to the outside of the cell. Where do they end up after endocytosis?
Definition
on this inside surface of the vesicle
Term
Which of the following types of molecules are the major structural components of the cell membrane?
Definition
phospholipids and proteins
Term
Which of the following is a true distinction between fermentation and cellular respiration?
Definition
NADH is oxidized by the electron transport chain in respiration only.
Term
The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is
Definition
oxygen
Term
Which metabolic pathway is common to both fermentation and cellular respiration of a glucose molecule?
Definition
glycolysis
Term
The immediate energy source that drives ATP synths by ATP synthase during oxidative phosphorylation is
Definition
the H+ concentration gradient across the inner mitochondrial membrane.
Term
When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction , the molecule becomes
Definition
oxidized
Term
In addition to ATP, what are the end products of glycolysis?
Definition
NADH and pyruvate
Term
Why is glycolysis described as having an investment phase and a payoff phrase?
Definition
It uses stored ATP and then forms a net increase in ATP
Term
Cellular respiration harvests the most chemical energy from which of the following?
Definition
chemiosmotic phosphorylation ( oxidative phosphorylation)
Term
Energy released by the electron transport chain is used to pump H+ ions which location?
Definition
mitochondrial inter-membrane space
Term
When hydrogen ions are pumped from the mitochondrial matrix across the inner membrane and into the inter membrane space, the result is the
Definition
creation of a proton gradient
Term
Approximately how many molecules of ATP are produced from the complete oxidation of two molecules of glucose (c6h12o6) in cellular respiration?
Definition
76
Term
In liver cells, the inner mitochondrial membranes are about 5X the area of the outer mitochondrial membranes and about 17 X that of the cell's plasma membrane. What purpose must this serve?
Definition
It increases the surface for oxidative phosphorylation.
Term
The accompanying figure shows the electron transport chain. Which of the following is the combination of substances that is initially added to the chain?
Definition
NADH, FADH2 and electrons
Term
Which of the following couples chemiosmosis to energy storage?
Definition
ATP SYNTHASE
Term
Which of the following normally occurs whether or not oxygen (O2) is present?
Definition
glycolysis
Term
Which metabolic pathway is common to both cellular respiration and fermentation?
Definition
glycolysis
Term
The ATP made during fermentation is generated by which of the following?
Definition
substrate-level phosphorylation
Term
In the absence of oxygen , yeast cells ( which are unicellular) can obtain energy by fermentation resulting in the production of
Definition
ATP, CO2, and ethanol(ethyl alcohol)
Term
Why is glycolysis considered to be one of the first metabolic pathways to have evolved?
Definition
It is found in the cytosol, does not involve oxygen, and is present in most organisms.
Term
What is the term for metabolic pathways that absorb stored energy by building complex molecules?
Definition
anabolic pathways
Term
Which process in eukaryotic cells will proceed normally whether oxygen (O2) is present or absent?
Definition
glycolysis
Term
The molecule that is phosphorylated
Definition
has an increased chemical reactivity it is primed to do cellular work
Term
Which of the following statements describes NAD+?
Definition
NAD+ is reduced to NADH during both glycolysis and the citric acid cycle.
Term
In chemiosmotic phosphorylation what is the most direct source of energy that is used to convert ADP + Pi to ADP?
Definition
energy released from movement of protons through ATP synthase.
Term
why are carbohydrates and fats considered high energy foods?
Definition
they have a lot of electrons associated with hydrogen.
Term
What is the term for metabolic pathways that release stored energy by breaking down complex molecules?
Definition
catabolic pathways
Term
the molecule that functions as the reducing agent (electron donor) in a redox or oxidation- reduction reaction
Definition
loses electrons and loses energy
Term
When a molecule of Nad+ gains a hydrogen atom the molecule becomes
Definition
reduced
Term
Which of the following statements describes NAD +?
Definition
Nad+ is reduced to NADH during both glycolysis and the citric acid cycle
Term
Where does glycolysis take place?
Definition
cytosol
Term
The ATP made during glycolysis is generated by
Definition
substrate- level phosphorylation
Term
The oxygen consumed during cellular respiration is involved directly in which process of event?
Definition
accepting electrons at the end of the electron transport chain
Term
Which process in eukaryotic cells will proceed normally whether oxygen (O2) is absent or present?
Definition
glycolysis
Term
During glycolysis when glucose is catabolized to pyruvate, most of the energy of glucose
Definition
retained in the pyruvate
Term
A molecule that is phosphorylated
Definition
has an increased chemical reactivity ; it is primed to do cellular work.
Term
Which kind of metabolic poison would most directly interfere with glycolysis ?
Definition
an agent that closely mimics the structure of glucose but it not metabolized
Term
Which of the following intermediary metabolites enters the citric acid cycle and is formed in part by the removal of carbon (CO2) from one molecule of pyruvate?
Definition
acetyl coA
Term
How many carbon atoms are fed into the citric acid cycle as result of the oxidation of one molecule of pyruvate?
Definition
2
Term
Carbon dioxide (CO2) is released during which of the following stages of cellular respiration
Definition
oxidation of pyruvate to acetyl coA and the citric acid cycle
Term
During aerobic respiration electrons travel downhill in which sequence?
Definition
food-NADH-electron transport-oxygen
Term
What is the difference between a monohybrid cross and a dihybrid cross?
Definition
A dihybrid cross involves organisms that are heterozygous for two characters and a monohybrid only one.
Term
The F1 offspring of Mendel's classic pea cross always looked like one of the two parental varieties because
Definition
one phenotype was completely dominant over another
Term
How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE?
Definition
8
Term
Two plants are crossed , resulting in offspring with a 3:1 ratio for a particular trait. This suggests
Definition
that the parents were both heterozygous
Term
A sexually reproducing animal has two unlinked genes one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism?
Definition
HT
Term
It is was important that Mendel examined not just the F1 generation in his breeding experiments, but the F2 generation as well , because
Definition
parental traits that were not observed in the F1 reappeared in the F2
Term
When crossing an organism that is homozygous recessive for a single trait with a heterozygote what is the chance of producing an offspring with the homozygous recessive phenotype?
Definition
50%
Term
In Certain plants tall is dominant to short. If a heterozygous plant is crossed with a homozygous tall plant, what is the probability that the offspring will be short?
Definition
0
Term
In a cross AaBbCc x AaBbCc what is the probability of producing the genotype AABBCC?
Definition
1/64
Term
In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. When plants flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?
Definition
100%
Term
What level of protein development forms a polymer?
Definition
Primary
Term
What is the monomer of proteins?
Definition
amino acids
Term
What type of reaction (hydrolysis or Dehydration synthesis) forms a protein.
Definition
Dehydration synthesis
Term
What would be the effects of changing one amino acid in an amino aid sequence?
Definition
you change the whole protein
Term
What causes denaturation?
Definition
Change in temp or ph
Term
What molecule in a cell contains all the essential information of a cell?
Definition
DNA
Term
What organelle constructs proteins based on genetic information?
Definition
ribosomes
Term
A cell specializes in producing proteins that are exported from the cell. What organelle would be abundant in this cell? Describe how you would observe this organelle
Definition
Rough Endoplasmic reticulum
Term
A cell specializes in producing proteins that stay within the cell. What organelle would be abundant in this cell? Describe how you would observe this organelle.
Definition
Ribosomes
Term
A cell specializes in modifying carbohydrates and lipids. Which organelle would you expect to be abundant in this cell?
Definition
Smooth ER
Term
A cell specializes in digestion , what organelle might you expect to be abundant in this cell?
Definition
lysosome
Term
A cell specializes in energy production, which organelle would you expect to be abundant in this cell?
Definition
mitochondrion
Term
Why would a cell form microvilli on its surface?
Definition
To increase surface area, which increases the amount of reactions that can take place.
Term
Which structure would take up a large amount of volume inside a plant cell?
Definition
Vacuoles
Term
What is the role of glycoproteins and glycolipids within the cell membrane?
Definition
They helps to stabilise the membrane structure as they forms hydrogen bonds with water molecules in the fluid surrounding the cell.


They also act as receptors and help in cell identification, hormonal responses and neurotransmission.
Glycoproteins can act as carrier proteins.
Term
Active transport moves molecules from what concentration to what concentration?
Definition
low to high
Term
Facilitated diffusion moves molecules form what concentration to what concentration?
Definition
high to low
Term
What is the difference between facilitated diffusion and diffusion?
Definition
facilitated diffusion uses protein carrier molecules
Term
What molecule is used by organisms to couple exergonic reactions with endergonic reactions?
Definition
ATP
Term
What process makes ATP?
Definition
cellular respiration
Term
Does hydrolysis or dehydration synthesis release energy from ATP?
Definition
dehydration synthesis
Term
What is energy coupling?
Definition
using an exergonic reaction to power an endergonic reaction
Term
What are the three general steps of a cell receiving a signal and responding?
Definition
Reception, Response, Transduction
Term
what is paracrine signaling?
Definition
neighboring molecules release molecules that signal neighboring molecules.
Term
A drug prevents the shortening of microtubules, during what phase of mitosis would you expect the process to be halted?
Definition
stuck in metaphase
Term
A drug prevents the elongation of microtubules, during what phase of mitosis would you expect the process to be halted?
Definition
stuck pro metaphase
Term
A drug prevents the reformation of the nuclear membrane, during what phase of mitosis would you expect the process to be halted?
Definition
g2 m checkpoint
Term
A drug prevents microtubules from attaching to kinetochores of chromosomes, during which phase of mitosis would you expect the process to be halted?
Definition
pro-metaphase
Term
When is DNA duplicated?
Definition
S PHASE
Term
Which phase of mitosis contained the M checkpoint?
Definition
g2
Term
Do all sexual organisms have the same life cycle?
Definition
no
Term
how many chromosomes are in humans?
Definition
46
Term
How many maternal chromosomes?
Definition
23
Term
How many paternal chromosomes?
Definition
23
Term
How many autosomal chromosomes?
Definition
22
Term
How many chromosomes in a fertilized egg?
Definition
46
Term
Are gametes diploid or haploid?
Definition
haploid
Term
Is a fertilized egg haploid or diploid ?
Definition
diploid
Term
How many chromosomes are in a human diploid cell?
Definition
46
Term
How many chromosomes are in a human haploid cell?
Definition
23
Term
How many sets of chromosomes are in a human diploid cell? Haploid Cell?
Definition
2n , n
Term
Are gametes produced by meiosis or mitosis?
Definition
meiosis
Term
are somatic cells produced by mitosis or meiosis?
Definition
mitosis
Term
what are the three stages of cell respiration?
Definition
Glycolysis , Kreb Cycle , oxidative phosphorylation
Term
Glycolysis occurs in
Definition
cytoplasm
Term
Oxidative Phosphorylation occurs in
Definition
inner membrane of mitochondria
Term
kreb cycle occurs in
Definition
mitochondrial matrix
Term
glycolysis produces
Definition
2 atp and 2nadh
Term
kreb cycle produces
Definition
4 atp 10nadh 2fadh
Term
Which phase will continue with or without the presence of Oxygen?
Definition
glycolysis
Term
Which phase of cell respiration is common to both aerobic respiration as well as fermentation?
Definition
glycolysis
Term
What are the differences and similarities of aerobic respiration and anaerobic respiration?
Definition
presence of oxygen
Term
3:1 phenotypic ratio suggest what about parents genotypes?
Definition
Heterozygous monohybrid cross
Term
1:2:1 phenotypic ratio suggests what about inheritance?
Definition
incomplete dominance
Term
What does true breeding mean?
Definition
homozygous
Term
If multiple traits can be observed to obey the law of independent assortment, what can be inferred about their position on chromosomes?
Definition
they are far apart or on different chromosomes.
Term
What can be said about the crossing over rates between two genes the closer the genes are located to each other on the same chromosome?
Definition
less likely recombination rate
Term
What can cause the daughter cell of a mitotically producing cell to be genetically different than the parent cell?
Definition
mutation
Term
What is crossing over?
Definition
equal segments of DNA chromosomes are exchanged
Term
What is a gene’s location on a chromosome referred to as?
Definition
locus
Term
Describe the levels of cyclin in a cell as it moves through the cell cycle.
Definition
fluctuate
Term
Describe the levels of CDK in a cell as it moves through the cell cycle.
Definition
it will be constant
Term
Describe the levels of MPF in a cell as it moves through the cell cycle.
Definition
will continually increase as mitosis approaches and sharply decrease when mitosis is complete
Term
What does CDK, and MPF stand for?
Definition
Cyclin dependent kinase
Mitosis Promoting Factor
Term
There are 20 variations of a gene. How many different different variations can a diploid organisms contain for this gene?
Definition
2
Term
What does it mean for an enzymes to be a kinase?
Definition
Starts phosphorylation
Term
What is the shortest portion of the cell cycle?
Definition
Mitosis
Term
How can termination of a cell signal be accomplished?
Definition
Removal of a ligand
Term
How are dehydration synthesis and hydrolysis linked?
Definition
coupling
Term
What are the major classes of polymers? What are their monomers?
Definition
Carbs, Proteins, Lipids, DNA
monosacs, aminos , fatty acids and glycerol, nucleotides
Term
Two monosaccharides are linked to form what?
Definition
disaccharide
Term
What are the similarities and differences of starch and cellulose?
Definition
Starch is energy for plants. Cellulose is structural component of plants.

both polymers of glucose
Term
What are the similarities and differences of starch and glycogen?
Definition
both polymers of glucose
Starch = plant
glycogen= animals
Term
What molecule acts as a relay molecule for genetic information from nucleus to protein?
Definition
Term
disulfide bridges
Definition
tertiary
Term
Heroin is able to mimic the effects of morphine. Google the molecular images of both and explain why both molecules elicit similar responses in organisms.
Definition
molecular shape similarities that allow morphine to bind to endorphin receptors , An endorphin is a natural brain signal that helps us feel good (or better). the morphine molecule, an opiate, is a close match to the structure of an endorphin. The body does not recognise the difference either way, so the chemical impostor morphine can bind to endorphin receptors.
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