Gastrointestinal physiology: practice question

A Physiology 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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Physiology · Gastrointestinal physiology

Sample item

What enzyme begins protein digestion in the stomach?

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

The answer and the reasoning

D. Pepsin

The relevant Gastrointestinal physiology principle makes Pepsin the best answer because it directly explains the structure or physiological response in the stem.

Option by option

  • A. Trypsin

    Trypsin is not supported by the key clue provided in this item.

  • B. Lipase

    Lipase is associated with a different anatomical or physiological role.

  • C. Amylase

    Amylase does not correspond to the structure or response being tested.

  • D. Pepsin (correct)

    Correct. Pepsin directly follows from the core gastrointestinal physiology relationship.

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 Physiology questions

Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is D, Pepsin. The relevant Gastrointestinal physiology principle makes Pepsin the best answer because it directly explains the structure or physiological response in the stem.

Why is "Trypsin" not the answer?

Trypsin is not supported by the key clue provided in this item.

Why is "Lipase" not the answer?

Lipase is associated with a different anatomical or physiological role.

Why is "Amylase" not the answer?

Amylase does not correspond to the structure or response being tested.

What concept does this question test?

It tests Gastrointestinal physiology in Physiology. The correct option holds because: Correct. Pepsin directly follows from the core gastrointestinal physiology relationship.

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 Gastrointestinal physiology?

For each system, sketch the key graph (pressure–volume loop, oxygen dissociation curve, nephron handling) and explain it aloud. Then use the flashcards and the other Physiology 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.