Membrane transport: 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 · Membrane transport

Sample item

What transport mechanism moves sodium out of cells using ATP?

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

The answer and the reasoning

C. Sodium-potassium pump

The relevant Membrane transport principle makes Sodium-potassium pump the best answer because it directly explains the structure or physiological response in the stem.

Option by option

  • A. Facilitated diffusion

    Facilitated diffusion is associated with a different anatomical or physiological role.

  • B. Simple diffusion

    Simple diffusion does not correspond to the structure or response being tested.

  • C. Sodium-potassium pump (correct)

    Correct. Sodium-potassium pump directly follows from the core membrane transport relationship.

  • D. Osmosis

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

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 C, Sodium-potassium pump. The relevant Membrane transport principle makes Sodium-potassium pump the best answer because it directly explains the structure or physiological response in the stem.

Why is "Facilitated diffusion" not the answer?

Facilitated diffusion is associated with a different anatomical or physiological role.

Why is "Simple diffusion" not the answer?

Simple diffusion does not correspond to the structure or response being tested.

Why is "Osmosis" not the answer?

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

What concept does this question test?

It tests Membrane transport in Physiology. The correct option holds because: Correct. Sodium-potassium pump directly follows from the core membrane transport 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 Membrane transport?

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.