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TX HEB ISD 9th Grade Science
Texas HEB ISD 9th Grade Science
102
Science
9th Grade
09/24/2018

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Term
Carbohydrates
Definition
Composed of carbon, hydrogen, and oxygen, in a ratio of 1:2:1
Term
Monosaccharides
Definition
The simplest sugar molecule
Term
Disaccharide
Definition
Two joined sugars, such as sucrose, lactose, and maltose
Term
Polymerize
Definition
Complex joined molecule, such as starch, glycogen, cellulose, lignin, and chitin
Term
Starch
Definition
Stored sugar from plants
Term
Glycogen
Definition
Stored sugar from animals, in the liver or muscles
Term
Lipids
Definition
Not a polymer, no affinity to water; fats
Term
Benefits of Lipids
Definition
Protect from cold, balance hormones, act as lubricants for joints, and insulate nerve cells
Term
Structure of Fats
Definition
Three molecules of fatty acids, and one molecule of glycerol
Term
Saturated
Definition
Fatty acid with the maximum number of hydrogen atoms bonded to the carbon chains; solid at room temperature
Term
Unsaturated
Definition
Double bond between adjacent carbon atoms reducing the number of hydrogen atoms; liquid at room temperature
Term
Phospholipid
Definition
Two molecules of fatty acid, one molecule of glycerol, and one molecule of phosphate; an important component of a cell membrane
Term
Hydrophobic
Definition
Fatty acid tails that point inward and repel water
Term
Hydrophilic
Definition
Glycerol heads that point outward and attract water
Term
Steroids
Definition
Four carbon lipid rings, including cholesterol and progesterone
Term
Parts of Plasma Membrane
Definition
Phospholipids
Protein Chennels
Glycoprotein
Carbohydrate chains
Chelesterol
Bilayer
Term
Bilayer
Definition
The plasma membrane is a _______ structure
Term
Sheets of lipid molecules
Definition
Bilayer structure is made up of ______with protein molecules and cholesterol molecules embedded throughout
Term
Fluid mosaic
Definition
The Plasma membrane is a_____within the membrane
Term
2 fatty acids
glycerol
Definition
The lipid bilayer is composed of _____attached to a _____instead of 3 fatty acids. In place of the 3rd fatty acid there is a phosphate group. PO4
Term
Unsaturated fatty acid tail
Definition
_____:Bends at double bond and is more fluid. Unsaturated remains liquid at low temperatures
Term
Cholesterol
Definition
____:Rigid molecule that strengthens the fluid mosaic (plasma membrane) and makes it more stable. Cholesterol also keeps tails from sticking to each other.
Term
Proteins
Definition
_____in the plasma membrane have several functions
Term
Functions of proteins in the plasma membrane
Definition
transport molecules
enzymes chemical reactions
some protein markers fight disease
other marks give cell its identity so immune system can recognize it as "good" cell carbohydrate chain-glycoproteins
Term
Factors that affect enzyme activity
Definition
inhibitors, PH, temperature
Term
Optimum temperature of an enzyme
Definition
98.7 is BEST
Term
Polymers of smaller subunits
Definition
Like complex carbohydrates, proteins are biomolecules that serve many functions and can be chemically broken down and restructures. Both proteins and complex carbohydrates are the following______.
Term
Biomolecules
Definition
Nucleic acids are________
Term
Store and transmit genetic information
Definition
The primary function of nucleic acid_____
Term
Functions of lipids in the human body
Definition
store energy for muscles/provide energy
produce hormones
Term
Polymer
Peptide
Definition
A protein is a ______ made of amino acid monomers, linked by _____ bonds
Term
Twenty
Definition
There are ___ different amino acids, and the correct sequence of amino acids for producing each type protein is provided by DNA
Term
Nitrogen
Definition
All amino acids contain the elements carbon, hydrogen, oxygen, and ______.
Term
Layers
Definition
Proteins have multiple_____of structure
Term
Sequence
Definition
The primary structure relates to the _____ of amino acids in the protein.
Term
Helical
Definition
Primary structures link and fold to form sheets or____structures, which are the secondary structures.
Term
Quarternary
Definition
These form larger three-dimensional structures known as the teritary or_____
Term
Basis
Definition
Proteins form the ____ of all life processes
Term
Immune
Definition
The muscles in your body, organs, components of your ____system, and enzymes are examples of proteins.
Term
Stomach
Definition
Proteins are broken down in the____ and intestine into their component amino acids
Term
Synthesize
Definition
Cells can then effectively use these amino acids to____or repair muscles, organs, or bones.
Term
Bodies
Definition
Our ____ cannot synthesize all the amino acids that are required
Term
Covalent bonds
Definition
The sharing of valence electrons between atoms
Term
Molecule
Definition
Atoms joined together by covalent atoms
Term
Polar
Definition
A molecule in which the charges are unevenly distributed
Term
Cohension
Definition
Attraction between molecules of the same substance
Term
Solute
Definition
The substance that is dissolves in a solution
Term
Adhesion
Definition
Attraction between molecules of different substances
Term
Non-polar
Definition
A molecule in which the charges are evenly distributed
Term
Solvent
Definition
The substance that does the dissolving in a solution
Term
Acid
Definition
Substances with a PH below 7 and having more H+ ions
Term
Base
Definition
Substances with a PH ABOVE 7 and having MORE OH ions
Term
Monomer
Definition
Single unit molecule
Term
Polymer
Definition
Macromolecule made up of many single unit molecules
Term
Carbohydrate
Definition
Macromolecule of sugars and is primary source of energy
Term
Protein
Definition
Micromolecule of amino acids and controls cell processes
Term
Nucleic acids
Definition
Macromolecule of nucleotides and stores genetic material
Term
Lipid
Definition
Macromolecule of glycerol and fatty acids for long term storage
Term
Chemical Reaction
Definition
Process that changes one set of chemicals into another
Term
Reactant
Definition
Elements or compounds that enter into a chemical reaction
Term
Product
Definition
Elements or compounds that are produced in a chemical reaction
Term
Enzyme
Definition
Proteins used to speed up chemical reactions
Term
Evidence of Chemical Reaction
Definition
change in color
new substance
gas
change in temperature
light
texture
Term
Cell Theory
Definition
Lasted over 150 years
Term
Cell Theory
Definition
All living things are made of one or more cells

cells are the basic unit of structure and function in organisms

all cells arise from existing cells
Term
Men Who Discovered/Defined Cell Theory
Definition
Hooke
Leewvonhoek
Schleidian
Schwann
Virchow
Term
Multicellular
Definition
many cells
Term
Unicellular
Definition
one cell
Term
Sexual or Asexual
Definition
Reproduction
Term
Prokaryote
Definition
-No nucleus
DNA
Smaller and simpler
cell wall
cell membrane
DNA is in a single circle
Term
Eukaryote
Definition
HAS a nucleus
DNA
NO cell wall
Cell membrane
Large and complex
Has a nucleus
Term
Nucleus
Definition
Container for DNA
Produces ribosomes
Term
Rough Endoplasmic Reticulum
Definition
Assembles lipids and proteins
Term
Smooth Endoplasmic Reticulum
Definition
Plays different functions
Term
Cell Membrane
Definition
Regulates materials entering and leaving cell
Term
Cytoplasm
Definition
clear liquid inside the cell
Term
Ribosomes
Definition
Synthesizes proteins
Term
Golgi Apparatus
Definition
Modifies, sorts, and packages proteins and lipids for storage or transport out of the cell
Term
DNA
Definition
Carries out genetic information
Term
Vacuole
Definition
Stores materials
Term
Mitochondria
Definition
Convert chemical energy into usable compounds
Term
Lytic
Definition
Viral reproduction method using cell wall attachment; kills cell
Term
Lysogenic
Definition
Viral reproduction method using cell's genetic material; does not kill cell
Term
Glucose Energy
Definition
Needs to be broken down into ATP in multiple steps to make cellular energy because it's too long for one step like ADP+P
Term
Photosynthesis
Definition
Process where sunlight is captured and converted into chemical energy using carbon dioxide and water
Term
Cellular Respiration
Definition
The opposite of photosynthesis, using oxygen and food to produce energy, generating carbon dioxide as a byproduct
Term
Alcoholic Fermentation
Definition
Cell method to convert sugar to energy without using oxygen, creates alcohol as a byproduct
Term
Prophase
Definition
Cell division step where chromosomes are visible, envelope disappears, and an envelope forms
Term
Metaphase
Definition
Cell division step where chromosomes line up along an equator
Term
Anaphase
Definition
Cell division step where the centromere divides, chromatids separate, and the chromosomes move to different sides
Term
Telophase
Definition
Cell division step where the nuclear envelope reforms, and the chromosomes uncoil
Term
Replication
Definition
Process for a cell to copy its DNA in the nucleus during interphase
Term
Protein Synthesis
Definition
Process for a cell to build a protein, putting amino acids together in a chain sequence
Term
Transcription
Definition
First protein synthesis step to make MRNA from DNA in the nucleus
Term
Translation
Definition
Second protein synthesis step to build a protein on the ribosome using the RNA code
Term
Mutation
Definition
Any change in DNA, including deleting pairs, adding pairs, or substituting pairs
Term
Genes
Definition
DNA sections of chromosomes that control the production of proteins
Term
Gamete
Definition
Sex cells with half the number of chromosomes
Term
Haploid
Definition
Cell with a full set of chromosomes
Term
Diploid
Definition
Cell with twice the number of chromosomes
Term
Fertilization
Definition
Process in which one haploid gamete joins with another haploid gamete
Term
Meiosis
Definition
Cell division that reduces the number of chromosomes by half through separation
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