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Chapter 6
BIO LAB
8
Biology
Undergraduate 1
09/25/2014

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Term
Enzymes
Definition
proteins that function as biological catalysts
Term
catalyst
Definition
a substance that lowers the amount of energy necessary for a chemical reaction to occur.
Term
Activation energy
Definition
by lowering this, an enzyme speeds up the rate at which a reaction occurs.
Term
substrate
Definition
substance being activated upon.
Term
enzyme-substrate
Definition
substrate molecules combined with enzyme molecules.
Term
enzyme specificity
Definition
lies in the shape of the protein molecule; alters its ability to function.
Term
catalase
Definition
found in all aerobic cells (plants, animals, microbes), protect cells from toxic effects of hydrogen peroxide.
Term
Denaturation
Definition
enzyme loses structure; loses function.
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