Enzymes

Question 1

Oxidoreductases

Answer 1

Catalyze oxidation and reduction of two molecules.

Question 2

Transferases

Answer 2

Catalyze transfer of C, N, or P groups from one molecule to another.

Question 3

Hydrolases

Answer 3

Catalyze cleaves of bonds by adding water.

Question 4

Lyases

Answer 4

Catalyze cleavage of carbon containing bonds

Question 5

Isomerases

Answer 5

Catalyze rearrangement of optical or geometric isomers

Question 6

Ligases

Answer 6

Uses ATP (or high energy phosphates) to catalyze bond formation.

Question 7

Synthase

Answer 7

No ATP required enzyme

Question 8

Synthetase

Answer 8

Requires ATP enzyme

Question 9

Oxidase

Answer 9

Uses oxygen as an acceptor without incorporating enzyme

Question 10

Oxygenase

Answer 10

Uses oxygen as an acceptor while incorporating it enzyme.

Question 11

Irreversible inhibition

Answer 11

Binds to enzyme through covalent bonds that can not be reversed.

Question 12

Reversible inhibition

Answer 12

Binds to enzyme through non-covalent bonds that can be reversed.

Question 13

Non competitive inhibition

Answer 13

Inhibitor binds to an allosteric site (not active)

• Increases Vmax
• Does not affect Km

Question 14

Competitive inhibition

Answer 14

Inhibitor binds to the active site of an enzyme.

• Increase Km
• Does not affect Vmax

Question 15

Suicide inhibition

Answer 15

Enzyme converts the inhibitor to an active form which destroys protein