Pharmacodynamics: 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 · Pharmacodynamics

Sample item

What is efficacy of a drug?

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

The answer and the reasoning

D. Maximum response it can produce

The central Pharmacodynamics concept identifies Maximum response it can produce as the best answer because it directly explains the mechanism, indication, adverse effect, or organism feature described.

Option by option

  • A. Protein binding only

    Protein binding only is unsupported by the mechanism or clinical clue in the stem.

  • B. Dose needed for onset only

    Dose needed for onset only does not fit the stated pharmacodynamics relationship.

  • C. Fraction absorbed only

    Fraction absorbed only has another context but is not the most appropriate answer here.

  • D. Maximum response it can produce (correct)

    Correct. Maximum response it can produce matches the decisive point in this scenario.

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, Maximum response it can produce. The central Pharmacodynamics concept identifies Maximum response it can produce as the best answer because it directly explains the mechanism, indication, adverse effect, or organism feature described.

Why is "Protein binding only" not the answer?

Protein binding only is unsupported by the mechanism or clinical clue in the stem.

Why is "Dose needed for onset only" not the answer?

Dose needed for onset only does not fit the stated pharmacodynamics relationship.

Why is "Fraction absorbed only" not the answer?

Fraction absorbed only has another context but is not the most appropriate answer here.

What concept does this question test?

It tests Pharmacodynamics in Pharmacology. The correct option holds because: Correct. Maximum response it can produce matches the decisive point in this scenario.

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 Pharmacodynamics?

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.