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Goal 4.1.3 Lesson 4
Enzymes
10
Biology
10th Grade
02/16/2013

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Term
reactants
Definition
are the atomes, molecules, or compounds that enter into a chemical reaction
Term
products
Definition
are the atoms, molecules, or compounds that result from the reation
Term
catalyst
Definition
is a substance that increases the rate of a chemical reaction without itself being changed by the reaction
Term
enzyme
Definition
is a protein that serves as a catalyst, enabling or speeding chemical rections in cells
Term
substrates
Definition
reactants in enzyme-catalyzed reactions
Term
What is the shape of enzymes?
Definition
3-dimensional shape
Term
Are enzymes specific to one reaction?
Definition
yes
Term
activation energy
Definition
is the minimum amount of energy needed for colliding molecules to react
Term
What does an enzyme do in a chemical reaction?
Definition
it lowers the activation energy
Term
Name the two factors that affect enzymes?
Definition
temperature and pH
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