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First Semester Biology Exam
Exam on First Semester Biology
94
Biology
9th Grade
12/17/2011

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Term
What is the unit for length?
Definition
meter
Term
What is the unit for Volume
Definition
liter
Term
hat is the unit for mass?
Definition
gram
Term
graduated cylinder
Definition
to measure volume
Term
test tubes
Definition
toheat liquids
Term
triple beam balance
Definition
to measure mass
Term
waht should be done if an expirement fails?
Definition
redo the expirement until it works. (retest)
Term
describe independent variables
Definition
vrible that stands on its own and int changed by any varibles you are measuring. (treatment)
Term
Describe dependent varibles
Definition
varible that depends on other varibles. (measurement)
Term
describe the control varible
Definition
the other varibles (that are kept the same or controlled)
Term
describe the control varible
Definition
the other varibles (that are kept the same or controlled)
Term
Line graphs are used to graph what?
Definition
continuous varibles (height, length of time) it is in numbers.
Term
Bar graphs are used to graph what?
Definition
data that is catagerized or counted. (in numbers and words)
Term
Pie graphs are used to graph what?
Definition
percentages
Term
What are some of the lab saftey rules?
Definition
tie hair up, read directions first, clean up, wear goggles.
Term
What is a covalent bond
Definition
a chemical bond formed by the SHARING of one or more electrons, especially pairs of electrons, between atoms. (Know what it looks like)
Term
What is an ionic bond
Definition
a chemical bond between two ions with opposite charges chatacteristic of salts. elctrovalent bond. TRANSFERRING (NaCl)
Term
what is a hydrogen bond?
Definition
a chemical bond in which hydrogen atom of one molecule is attracted to an electronegative atom, especially a nitrogen, oxygen, or florine atom, usuallyof another molecule.
Term
Atoms form bonds to try to fill the.....
Definition
outer energylevel.
Term
what do atoms do to become more stable?
Definition
1. losing an atom 2. gaining an atom 3. sharing electrons
Term
What are the 3 subatomic particles? Describe their charge and where they are in the atom
Definition
Proton-positive-in nucleus
Electron-negative-outside nucleus
Neutron-neutral-in nucleus
Term
describe the surface area
Definition
a property of lipids arising from unbalanced moluclar chesive forces at or near the surface, as the result of which the surface tends to contract and has properties resemblind those of a streched elastic membrane.
Term
describe adhesion
Definition
water sticking to something or someone. Plarity makes this possible
Term
describe cohesion
Definition
the making of water. Polarity makes this possible
Term
Because the 0 side is positive, and the H side is negative, water molecules are ....
Definition
polar, so they attract.
Term
Because the 0 side is positive, and the H side is negative, water molecules are .... This polarity causees... and .... and ....
Definition
polar, so they attract./// adhesion(attraction to other substandes); cohesion (attraction to the same substances) surface tension (cohesion on the surface of the water)
Term
what is an acid
Definition
1-6 on the pH scale
Term
what is a base
Definition
8-14 on the pH scale
Term
what is a neutral
Definition
7 on the pH scale
Term
which have more H+
Definition
acides (strong bases have the least)
Term
which have more OH-
Definition
Bases
Term
what pH are strong bases
Definition
13-14
Term
what pH are weak bases
Definition
7-9
Term
what pH are strong acids
Definition
0-3
Term
what pH are weak acids
Definition
5-7
Term
By looking at the pH scale, determining the pH needed for chemical reactions in human cells? (Hint: find the pH for blood)
Definition
7.5
Term
what are the fourmacromolecules (organic molecules)
Definition
Carbonhydrates, lIPIDS, Nucleic Acids, Proteins
Term
What are the elements in Carbonhydrates
Definition
Carbon, hydrogen, and oxygen
Term
What are the elements of Lipids?
Definition
Oxygen, Hydrogen, and Carbon
Term
What are the elements for Nucleic Acids
Definition
Carbon, Hydrogen, oxygen, Nitrogen, and Phosphorus
Term
what are the elements for proteins?
Definition
Carbon, Hydrogen, oxygen, nitrogen
Term
What is Carbonhydrate made of (the monomers)
Definition
monosacchrides
Term
what are Lipids made of (the monomers)
Definition
glycerol and fatty acids
Term
what are nucleic acids made of (the monomers)
Definition
nucleotides
Term
what are Proteins made of (the monomers)
Definition
amino acids
Term
What is the function of carbonhydrates
Definition
main source of energy
Term
what is the function of Lipids
Definition
store energy and from membranes, hormones.
Term
What is the function of Nucleic Acids
Definition
transmit hereditary information
Term
What is the function of Proteins
Definition
for enzymes, muscels, and other things like that.
Term
which type of macromolecule are enzymes?
Definition
proteins
Term
describe the function of an enzyme
Definition
they work to make reactions go faster in the digestive system and metabolic processes. Speeds up chemical reactions. They never change
Term
what is a substrate
Definition
they are the reactants the the enzymes works on. it is something that is acted upon in biochemical reactions.
Term
What are the 2 factors that affect the rate of enzyme function
Definition
temperature and the pH level
Term
What are the parts of an ATP molecule?
Definition
adnine, ribose, 3 phosphate groups
Term
What happens when a phosphate breaks off to produce ADP?
Definition
a chemical bond has been broken so energy is being released to the cell.
Term
What is a prokaryote cell and give an example
Definition
Prokaryotic cells lack a nucleus or a membrane found orangelles. Example: Bacteria
Term
what is a eukaryotic cell and give an example
Definition
have a nucleus and membrane found orangelles. Example: plant and animal cells.
Term
describe and give the function of the nucleus
Definition
found in both plant and animal cells. It is the control center of the cell
Term
describe and give the function of the mitochondria
Definition
found in both the plant and animal cells. It is the powerhouse of the cell.
Term
describe and give the function of the cell membrane
Definition
found in both the plant and animal cells. it controls what materials enter and exit the cell.
Term
plants have....
Definition
a large vacuole, cell walls, and chloroplasts.
Term
describe and give the function of lysosomes.
Definition
found in both the plant and anilmal cells. digests
Term
describe and give the function of the E.R
Definition
found in both the animal and plant cell. Transports
Term
describe and give the function of the Golgi Body
Definition
found in both the plant and animal cells. Packages
Term
describe and give the function of the cell wall
Definition
found only in the plant cell. Protects and gives shape and support to the cell.
Term
describe and give the function of the vacuole
Definition
found in both the plant and animal cell. Storage
Term
describe and give the function of the chloroplasts
Definition
only found in the plant cell. Produces glucose
Term
what are two structors that the cell could use for locomotion
Definition
cillia: hair like and flagella: tail like
Term
what is active transport and give an example of each.
Definition
is movement past the membran with movement. Examples: endocytosis, extosis, natk-pump
Term
what is passive transport and give examples.
Definition
is movement past the membrane without movement. Examples: diffusion, faciliated diffussion, osmisis.
Term
what is the chemical equation and word equations for phoosynthesis. which are reactants and which are products?
Definition
(Reactants) 6CO2 + 6H2O -> (aka:carbon dioxide plus water plus light energy) (PRODUCTS) C6H1206 + 6O2 (aka: glucose pluse oxygen) C.W.G.O (can we go out)
Term
what is the chemical and the word equation for cellular respiration. Which are the reactants and products?
Definition
(Reactants) C6H12O6 + 6O2 -> (aka glucose plus oxygen) (PRODUCTS) 6C02 + 6H20 (aka carbon dioxide plus water plus ADP (energy)) G.O.C.W (Go out, Can we?)
Term
What are 2 reactions of photosynthesis? Identify the the reactants and the products
Definition
(Reactant) Light dependent reaction (water, P-oxygen) and (Product) Calvin Cycle reaction (R-carbon dioxide, P-sugar)
Term
what are the 3 reactions involved in cellular respiration?
Definition
Glycosis/Krebs cycle/ electron transport chain.
Term
what is an heterotroph and give examples
Definition
organism that cant produce their own food. (humans and animals)
Term
what is an heterotroph and give examples
Definition
organism that cant produce their own food. (humans and animals)
Term
what is an heterotroph and give examples
Definition
organism that cant produce their own food. (humans and animals)
Term
what is an autotroph and give an example of one.
Definition
organisms that can produce their own food. example: plants
Term
what are the levels of cell organization in order from LEAST to MOST complex
Definition
Cell-Tissue-Organ-Organ System-Organism
Term
what are the number of chromosomes in human cells?
Definition
23 pairs, 46 chromosomes in total. 2 sex chromosomes.
Term
Male chromosomes?
Definition
x & x
Term
where are genes located?
Definition
they are located in Chromosomes
Term
Explain Binary Fission
Definition
The cell reproducton of a cell or a one- celled organism y division into two nearly qual parts. A form of asexual reproduction resulting in two daughter cells with identical genetic information as the parent cell. Example: Bacteria
Term
female chromosomes?
Definition
x & y
Term
female and male chromosome determine what?
Definition
offspring
Term
What is the sequence of events for the cell cycle?
Definition
G1, Synthesis, G2, Mitosis (prophase, metaphase, anaphase, telaphase), cytokinesis.
Term
mitosis produces what?
Definition
2 new daughter cells EXACTLY like the parent cells
Term
explain what happens to chromosomes during prophase
Definition
chromosomes become shorter and thicker
Term
explain what happens during metaphase
Definition
chromosomes line up in the middle
Term
compare and contrast diploid and haploid cell types
Definition
Diploid cells are body cells with 2 sets of chromosomes. Haploid cells are sex cells with 1 set of chromosomes.
Term
If the body cell of a plant has 8 chromosomes, the SEX cell of that plant would have ....
Definition
four
Term
explain the role of crossing over
Definition
occurs when chromosomes exchange segaments (DNA) of their chromatids.
Term
What is the purpose of meiosis?
Definition
process of producing gametes (haploid reproduction cells)
Term
What are gametes?
Definition
in humans, they ae called the sperm and egg, each containing 23 chromosomes.
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