NEET 2019 · Class 11

Biomolecules

Prosthetic groups differ from co-enzymes in that-

  1. (A)They can serve as co-factors in a number of enzyme-catalysed reactions.
  2. (B)They require metal ions for their activity.
  3. (C)They (prosthetic groups) are tightly bound to apoenzymes.
  4. (D)Their association with apoenzymes is transient.

The NCERT line that answers it

Verbatim line

Prosthetic groups are organic compounds and are distinguished from other cofactors in that they are tightly bound to the apoenzyme.

Chapter
Biomolecules
Section
9.8.6 Co-factors
Page
14
Words matched
41 of 41

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'they are tightly bound to the apoenzyme', which directly matches and conclusively proves option C as the correct answer.

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Question text is reproduced from the published NEET 2019 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.