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

1. is lost.

2. is reduced.

3. is increased.

4. is unaffected.

Subtopic:  Enzyme Cofactors |
 66%
Level 2: 60%+
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An organic substance bound to an enzyme and essential for its activity is called:

1. coenzyme                   
2. holoenzyme
3. apoenzyme                 
4. isoenzyme
Subtopic:  Enzyme Cofactors |
 76%
Level 2: 60%+
NEET - 2006
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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
Subtopic:  Enzyme Cofactors |
 81%
Level 1: 80%+
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The essential chemical components of many coenzymes are:

1. Nucleic acid 2. Carbohydrates
3. Vitamins 4. Proteins

Subtopic:  Enzyme Cofactors |
 71%
Level 2: 60%+
AIPMT - 2013
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The non- protein constituent of the enzymes are called

1. Apoenzyme 2. Holoenzyme
3. Cofactors 4. both A and C
Subtopic:  Enzyme Cofactors |
 76%
Level 2: 60%+
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The  protein constituent of the enzymes are called

1. Apoenzyme 2. Prosthetic group
3. Co-enzymes 4. Holoenzyme
Subtopic:  Enzyme Cofactors |
 85%
Level 1: 80%+
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Which of  the following are co-factors?

1. Co-enzymes 2. Metal ions
3. Posthetic groups 4. All of these
Subtopic:  Enzyme Cofactors |
 94%
Level 1: 80%+
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Which of the following is an organic compound?

1. Prosthetic group

2. Coenzymes

3. Metal ions

4. Both A and B

Subtopic:  Enzyme Cofactors |
 82%
Level 1: 80%+
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The Cofactor present in the Enzyme Peroxidase is

1. NADP 2. NAD
3. Haem 4. Zn
Subtopic:  Enzyme Cofactors |
 73%
Level 2: 60%+
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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
Subtopic:  Enzyme Cofactors |
 67%
Level 2: 60%+
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