part 2

Question 1

The protein part of an enzyme.

Answer 1

Apoenzyme

Question 2

A nonprotein portion of an enzyme that is
necessary for catalytic function;

Answer 2

Cofactor

Question 3

give examples of cofactors

Answer 3

Zn2+ and Mg2+

Question 4

A nonprotein organic molecule, frequently
a B vitamin, that acts as a cofactor.

Answer 4

Coenzyme

Question 5

The compound or compounds whose
reaction an enzyme catalyzes.

Answer 5

Substrate

Question 6

The specific portion of the enzyme to which a substrate binds during reaction

Answer 6

Active site

Question 7

Any process that initiates or increases the activity of an enzyme

Answer 7

Activation

Question 8

Any process that makes an active enzyme less
active or inactive.

Answer 8

Inhibition

Question 9

A substance that binds to the active site of an enzyme thereby preventing binding of
substrate.

Answer 9

Competitive inhibitor

Question 10

Any substance that binds to a portion of the enzyme other than the active site and thereby inhibits the activity of the enzyme.

Answer 10

Noncompetitive inhibitor

Question 11

A measure of how much a reaction rate is increased.

Answer 11

Enzyme activity

Question 12

Enumerate the factors that affect the enzyme activity

Answer 12

• Enzyme concentration
• Substrate concentration
• Temperature
• pH