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35
Biology
9th Grade
12/15/2010

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Term
Matter
Definition
Matter is anything that occupies space.
Term
DNA
Definition
A nucleic acid.
Term
Fatty acids
Definition
Simple molecules and energy for cells.
Term
Lipid
Definition
A fatty acid.
Term
Chemical bond
Definition
An attraction between atoms or molecules.
Term
Covalent Bond
Definition
A form of chemical bonding that is by the sharing of pairs of electrons between atoms.
Term
Nuetron
Definition
A particle with no net electric charge.
Term
Electron
Definition
A particle carrying a negative electric charge.
Term
Proton
Definition
A particle with an electric charge.
Term
Chemical Reaction
Definition
The formation of new substances from one or more reactants.
Term
Ionic bond
Definition
A formed when an atom gives away electrons or takes electrons from another atom.
Term
Atom
Definition
A basic unit of matter.
Term
Hydrogen bond
Definition
The attractive interaction of a hydrogen atom with an electronegative atom.
Term
Periodic table
Definition
A display of the chemical elements.
Term
Ion
Definition
Atoms with either extra electrons or missing electrons.
Term
Reactant
Definition
A substance or compound.
Term
Element
Definition
A chemical substance consisting of one type of atom.
Term
Marcrmolecule
Definition
A Very large molecule.
Term
Amino acid
Definition
A molecule that containing an amine group.
Term
Nucleic acid
Definition
A macromolecule composed of chains.
Term
Nucleotide
Definition
A molecule thats when joined together, make up the units of RNA and DNA.
Term
Organic
Definition
A member of a large chemical compound.
Term
Polysaccharide
Definition
A type of Carbohydrate.
Term
Polar molecule
Definition
Water
Term
Disaccharide
Definition
Any of a group of carbohydrates as sucrose or lactose.
Term
Carbohydrate
Definition
A main component
Term
Dehydration
Definition
Lack of water
Term
Hydrolysis
Definition
is a chemical reaction during which molecules of water H2O are split into hydrogen cations.
Term
Enzyme
Definition
A protein that cause a specific chemical change in other substances.
Term
Peptide bond
Definition
An amide bond that is not present on the main chain of a protein.
Term
Globular Protein
Definition
One of the two main proteins.
Term
Fiburous Protein
Definition
One of two main types of protein that have a certain structure.
Term
PH-Scale
Definition
A scale form 1-14 that indicates acids.
Term
Monosaccharide
Definition
Carbohydrate that does not hydrolyze, as glucose, fructose, or ribose.
Term
Catalyst
Definition
A substance which alters the rate of a chemical reaction
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