The non protein constituent present in many enzymes is called:

1. Co-enzyme 2. Co-factor
3. Apoenzyme 4. Holoenzyme
Subtopic:  Enzyme Cofactors |
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Haem in hemoglobin:
1. is loosely bound
2. is the co-enzyme
3. is the prosthetic group
4. has no influence on activity of Hb

Subtopic:  Enzyme Cofactors |
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What is the co-factor for the proteolytic enzyme, carboxypeptidase?

1. Molybdenum 2. Manganese
3. Zinc 4. Copper
Subtopic:  Enzyme Cofactors |
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Most of the coenzymes contain:

1. Metal ions 2. FMN and FAD
3. Ribonucleoproteins 4. Vitamins
Subtopic:  Enzyme Cofactors |
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The metal ion that acts as a co-factor for both alcohol dehydrogenase and carbonic anhydrase is:

1. Magnesium 2. Iron
3. Zinc 4. Nickel
Subtopic:  Enzyme Cofactors |
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Consider the following two statements regarding enzyme action:
I. Co-factors play a crucial role in the catalytic activity of the enzyme.
II. Catalytic activity is reduced when the co-factor is removed from the enzyme.
Of the above statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct

Subtopic:  Enzyme Cofactors |
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Consider the following enzymes:
I. Catalase
II. Peroxidase
III. Carboxypeptidase
Which of these enzymes require haem as a co-factor for their activity?

1. I only 2. I and II only
3. II and III only 4. I, II and III
Subtopic:  Enzyme Cofactors |
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