Part 1

Question 1

A biological catalyst

Answer 1

Enzyme

Question 2

True or False. All ENZYMES are proteins.

Answer 2

True

Question 3

Catalyzes the hydrolysis of peptide bonds formed by the carboxyl group of lysine and arginine.

Answer 3

Trypsin

Question 4

How are enzymes named and classified?

Answer 4

Enzymes are commonly named after the reaction or reactions they catalyze.

Question 5

Enzymes are classified into SIX (6) Major groups according to the TYPE OF REACTION catalyzed.

Answer 5

1. Oxidoreductases
2. Transferases
3. Hydrolases
4. Lyases
5. Isomerases
6. Ligases or Synthetases

Question 6

Catalyze oxidation-reduction reactions.

Answer 6

Oxidoreductases

Question 7

Group transfer reactions.

Answer 7

Transferases

Question 8

Hydrolysis reactions.

Answer 8

Hydrolases

Question 9

Addition of two groups to a C-C double bond.

Answer 9

Lyases

Question 10

Removal of two groups to create a C-C double bond.

Answer 10

Lyases

Question 11

Isomerization reactions.

Answer 11

Isomerasese

Question 12

The joining to two molecules.

Answer 12

Ligases or Synthetases

Question 13

The PROTEIN PART of an enzyme.

Answer 13

Apoenzyme

Question 14

A NONPROTEIN PART of an enzyme that is NECESSARY for catalytic function.

Answer 14

Cofactor

Question 15

Example of COFACTOR

Answer 15

Metallic Ions:
- Zn (Zinc)
- Mg (Magnesium)

Question 16

A nonprotein ORGANIC molecule, frequently a B Vitamin, that acts as a cofactor.

Answer 16

Coenzyme

Question 17

They are called the ENZYME SIDEKICKS.

Answer 17

Cofactor and Coenzyme

Question 18

Typically METAL IONS

Answer 18

Cofactors

Question 19

Are ORGANIC Molecules

Answer 19

Coenzymes

Question 20

What do you call the combination of APOENZYME + COFACTOR / COENZYME?

Answer 20

Holoenzyme

Question 21

The compound or compounds whose reaction an enzyme catalyzes.

Answer 21

Substrate