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Question

The cofactor present in the microbial enzyme catalase-peroxidase is:

A
Zn
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B
NAD
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C
NADP
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D
Haem
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Solution

The correct option is D Haem
An enzyme consists of a protein part called apoenzyme and non-protein part called cofactor. The apoenzyme and cofactor together form holoenzyme.

Prosthetic groups are attached to the enzymes permanently and are a type of cofactor. The cofactor present in the microbial enzyme catalase-peroxidase is haem, which is an example of a prosthetic group.
So, the correct answer is Haem.

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