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Terms in this set (12)
Why are enzymes (catalysts) needed for some reactions?
Certain natural processes occur very slowly on their own.
What is an enzyme?
Proteins that act as biological catalysts.
How do they and other types of catalysts work?
They lower the amount of activation energy needed.
Example of an enzyme reaction
When you drink milk, there is a sugar called lactose and your gallbladder produces a specific enzyme to digest it.
What does it mean to say an enzyme is "very specific"?
An enzyme's active site and the substrates have complementary shapes often comparable to lock and key.
How do they name enzymes?
By what reaction they help speed up.
What do you call the reactants of enzyme-catalyzed reactions?
What do you call the site on the enzyme where the reactants are brought together?
What does it mean to say the active site and the substrates have "complementary shapes"?
They fit together and the enzyme can help that particular substrate speed up a reaction.
How does temperature impact enzymes?
Human produced enzymes are best at body temperature (37 C)
How does pH affect enzymes?
Pepsin, the enzyme used to digest protein in the stomach works under the acidic conditions of your stomach.
How do regulatory molecules effect enzymes?
They carry chemical signals that can switch enzymes on and off as needed.
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