When the co-factor is removed from the enzyme, the catalytic activity:

1. is lost.

2. is reduced.

3. is increased.

4. is unaffected.

An organic substance bound to an enzyme and essential for its activity is called:

1. coenzyme                   

2. holoenzyme

3. apoenzyme                 

4. isoenzyme

I. Small organic molecules
II. Difficult to remove without denaturing the enzyme
III. Haem is an example

The above characters are of which of the following co-factors of an enzyme?

1. Metal ions

2. Prosthetic groups

3. Co-enzymes

4. Apoenzymes

The essential chemical components of many coenzymes are:
1. Nucleic acid
2. Carbohydrates
3. Vitamins
4. Proteins

The non- protein constituent of the enzymes are called

1. Apoenzyme

2. Holoenzyme

3. Cofactors

4. both A and C

The  protein constituent of the enzymes are called

1. Apoenzyme

2. Prosthetic group

3. Co-enzymes

4. Holoenzyme

Which of  the following are co-factors?

1. Co-enzymes

2. Metal ions

3. Posthetic groups

4. All of these

Which of the following is an organic compound?

1. Prosthetic group

2. Coenzymes

3. Metal ions

4. Both A and B

The Cofactor present in the Enzyme Peroxidase is

1. NADP

2. NAD

3. Haem

4. Zn

Which of the following organic compound association with the apoenzyme is only transient?

1. Prosthetic group

2. Coenzymes

3. Metal ions

4. Both A and B