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 is the primary role of bile salts?

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

The answer and the reasoning

D. Emulsify dietary fats

Bile salts emulsify dietary fat into smaller droplets and form micelles, facilitating lipase action and absorption of lipid digestion products.

Option by option

  • A. Absorb oxygen

    Oxygen absorption occurs at the lungs, not through bile salts.

  • B. Produce glucose

    Bile salts do not synthesize glucose.

  • C. Digest protein directly

    Protein digestion is driven by proteases such as pepsin and trypsin.

  • D. Emulsify dietary fats (correct)

    Correct: bile salts emulsify fats and assist micelle formation.

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.

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Questions about this Physiology question

What is the answer to this Physiology question?

The best answer is D, Emulsify dietary fats. Bile salts emulsify dietary fat into smaller droplets and form micelles, facilitating lipase action and absorption of lipid digestion products.

Why is "Absorb oxygen" not the answer?

Oxygen absorption occurs at the lungs, not through bile salts.

Why is "Produce glucose" not the answer?

Bile salts do not synthesize glucose.

Why is "Digest protein directly" not the answer?

Protein digestion is driven by proteases such as pepsin and trypsin.

What concept does this question test?

It tests Gastrointestinal physiology in Physiology. The correct option holds because: Correct: bile salts emulsify fats and assist micelle formation.

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.