Antibiotics: practice question

A Pharmacology 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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Pharmacology · Antibiotics

Sample item

Fluoroquinolones inhibit what bacterial enzyme?

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

The answer and the reasoning

D. DNA gyrase

This item reviews Antibiotics; DNA gyrase is the best answer because it directly matches the drug or organism pattern described.

Option by option

  • A. DHFR only

    DHFR only is plausible but is not the best answer here.

  • B. RNA polymerase only

    RNA polymerase only is not supported by the key finding.

  • C. Peptidoglycan transpeptidase

    Peptidoglycan transpeptidase does not fit the stated mechanism or pattern.

  • D. DNA gyrase (correct)

    Correct. DNA gyrase is supported by the defining feature.

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 Pharmacology questions

Questions about this Pharmacology question

What is the answer to this Pharmacology question?

The best answer is D, DNA gyrase. This item reviews Antibiotics; DNA gyrase is the best answer because it directly matches the drug or organism pattern described.

Why is "DHFR only" not the answer?

DHFR only is plausible but is not the best answer here.

Why is "RNA polymerase only" not the answer?

RNA polymerase only is not supported by the key finding.

Why is "Peptidoglycan transpeptidase" not the answer?

Peptidoglycan transpeptidase does not fit the stated mechanism or pattern.

What concept does this question test?

It tests Antibiotics in Pharmacology. The correct option holds because: Correct. DNA gyrase is supported by the defining feature.

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 Antibiotics?

Learn drugs as classes, then the exception in each class that an examiner would pick. Then use the flashcards and the other Pharmacology 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.