Enzymes: practice question

A Biochemistry question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Biochemistry · Enzymes

Sample item

What is an enzyme cofactor that is an organic molecule called?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Coenzyme

The core Enzymes principle identifies Coenzyme as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.

Option by option

  • A. Isoenzyme

    Isoenzyme is relevant in another context but is not the best answer here.

  • B. Coenzyme (correct)

    Correct. Coenzyme is supported by the key clue given.

  • C. Zymogen

    Zymogen does not account for the central finding in this sample.

  • D. Apoenzyme

    Apoenzyme does not match the stated enzymes mechanism.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More Biochemistry questions

Questions about this Biochemistry question

What is the answer to this Biochemistry question?

The best answer is B, Coenzyme. The core Enzymes principle identifies Coenzyme as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.

Why is "Isoenzyme" not the answer?

Isoenzyme is relevant in another context but is not the best answer here.

Why is "Zymogen" not the answer?

Zymogen does not account for the central finding in this sample.

Why is "Apoenzyme" not the answer?

Apoenzyme does not match the stated enzymes mechanism.

What concept does this question test?

It tests Enzymes in Biochemistry. The correct option holds because: Correct. Coenzyme is supported by the key clue given.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Enzymes?

Build one table of enzyme deficiency, disease, inheritance and key finding, then revise it by spaced recall. Then use the flashcards and the other Biochemistry questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.