Lipid metabolism: practice question

A Biochemistry 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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Biochemistry · Lipid metabolism

Sample item

What molecule transports long-chain fatty acids into mitochondria for beta-oxidation?

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

The answer and the reasoning

A. Carnitine

The core Lipid metabolism principle identifies Carnitine as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.

Option by option

  • A. Carnitine (correct)

    Correct. Carnitine is supported by the key clue given.

  • B. Thiamine

    Thiamine does not account for the central finding in this sample.

  • C. Biotin

    Biotin does not match the stated lipid metabolism mechanism.

  • D. Folate

    Folate is relevant in another context but is not the best answer here.

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 Biochemistry questions

Questions about this Biochemistry question

What is the answer to this Biochemistry question?

The best answer is A, Carnitine. The core Lipid metabolism principle identifies Carnitine as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.

Why is "Thiamine" not the answer?

Thiamine does not account for the central finding in this sample.

Why is "Biotin" not the answer?

Biotin does not match the stated lipid metabolism mechanism.

Why is "Folate" not the answer?

Folate is relevant in another context but is not the best answer here.

What concept does this question test?

It tests Lipid metabolism in Biochemistry. The correct option holds because: Correct. Carnitine is supported by the key clue given.

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 Lipid metabolism?

Build one table of enzyme deficiency, disease, inheritance and key finding, then revise it by spaced recall. Then use the flashcards and the other Biochemistry 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.