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 does a lower Km generally indicate?

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

The answer and the reasoning

D. Higher substrate affinity

This item reviews Enzymes; Higher substrate affinity is the best answer because it directly matches the biochemical or pathological mechanism described.

Option by option

  • A. Lower enzyme amount

    Lower enzyme amount does not fit the stated pattern.

  • B. No binding

    No binding is plausible but not the best answer.

  • C. Higher Vmax always

    Higher Vmax always is unsupported by the key feature.

  • D. Higher substrate affinity (correct)

    Correct. Higher substrate affinity fits the defining 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 D, Higher substrate affinity. This item reviews Enzymes; Higher substrate affinity is the best answer because it directly matches the biochemical or pathological mechanism described.

Why is "Lower enzyme amount" not the answer?

Lower enzyme amount does not fit the stated pattern.

Why is "No binding" not the answer?

No binding is plausible but not the best answer.

Why is "Higher Vmax always" not the answer?

Higher Vmax always is unsupported by the key feature.

What concept does this question test?

It tests Enzymes in Biochemistry. The correct option holds because: Correct. Higher substrate affinity fits the defining mechanism.

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.