The protein part of enzyme is

Prosthetic group

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Apoenzyme

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Holoenzyme

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Zymogen

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Solution

The correct option is B Apoenzyme
Enzymes are proteins which help to catalyze the biochemical reaction. The enzyme has a protein part which is not active is known as apoenzyme. It gets activated by the addition of an organic or inorganic cofactor. The holoenzyme is defined as apoenzyme in combination with the cofactor.
The cofactor is a nonprotein part of the enzyme. It can be metal ions or the organic chemical. The cofactors which are organic chemicals are known as the coenzyme. These are loosely attached to the apoenzyme. The tightly bound coenzymes are the prosthetic group.
So, the correct answer is option B.

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Similar questions

Q. Consider the following statements:
(A) Co-enzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group
(B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.

Select the correct option.

Consider the following statements A–D with certain blanks. Find the option which correctly fills up these blanks.
A. The protein portion of enzyme is called --------(i)
B. Prosthetic groups are-------------- (ii) bound to the protein part of enzyme.
C--------- (iii) is the prosthetic group of enzyme catalase.
D----------(iv) are nucleic acids with catalytic power.

Q. Assertion : A co-enzyme or metal ion that is very tightly bound to enzyme protein called prosthetic group.

Reason : A complete, catalytically active enzyme together with its bound prosthetic group is called apoenzyeme.

Q. Assertion :A coenzyme or metal ion tightly bound to enzyme protein is called prosthetic group. Reason: A complete catalytically active enzyme together with its bound prosthetic group is called apoenzyme.

Q. Assertion :A coenzyme or metal ion that is very tightly bound to enzyme protein called prosthetic group. Reason: A complete, catalytically active enzyme together with its bound prosthetic group is called apoenzyme.

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