Coenzymes play crucial roles in metabolism by:
1. Acting as a temporary storage of electrons and protons.
2. Serving as structural components of cell membranes.
3. Directly participating as one of the substrates in a reaction.
4. Acting as integral membrane proteins.
Subtopic:  Enzyme Cofactors |
From NCERT
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Which of the following forms part of a coenzyme?
1. \(\mathrm{Zn}^{2+}\)
2. Lipase
3. Vitamin B2
4. Lysine
Subtopic:  Enzyme Cofactors |
From NCERT
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Consider the following statements:

A:  A coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group
B: A complete catalytic enzyme with its bound prosthetic group is called apoenzyme


Select the correct option

1. (A) is false but (B) is true

2. Both (A) and (B) are true

3. (A) is true but (B) is false

4. Both (A) and (B) are false

Subtopic:  Enzyme Cofactors |
From NCERT
NEET - 2019
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NEET 2026 - Target Batch - Vital
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Prosthetic groups are distinguished from other cofactors in that they:
I: are organic compounds.
II: are tightly bound to the apoenzyme.
1. Only I is true
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Enzyme Cofactors |
From NCERT
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