Carbohydrate 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 · Carbohydrate metabolism

Sample item

What pathway generates NADPH and ribose-5-phosphate?

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

The answer and the reasoning

D. Pentose phosphate pathway

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

Option by option

  • A. Citric acid cycle

    Citric acid cycle is relevant in another context but is not the best answer here.

  • B. Beta-oxidation

    Beta-oxidation does not account for the central finding in this sample.

  • C. Urea cycle

    Urea cycle does not match the stated carbohydrate metabolism mechanism.

  • D. Pentose phosphate pathway (correct)

    Correct. Pentose phosphate pathway is supported by the key clue given.

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 D, Pentose phosphate pathway. The core Carbohydrate metabolism principle identifies Pentose phosphate pathway as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.

Why is "Citric acid cycle" not the answer?

Citric acid cycle is relevant in another context but is not the best answer here.

Why is "Beta-oxidation" not the answer?

Beta-oxidation does not account for the central finding in this sample.

Why is "Urea cycle" not the answer?

Urea cycle does not match the stated carbohydrate metabolism mechanism.

What concept does this question test?

It tests Carbohydrate metabolism in Biochemistry. The correct option holds because: Correct. Pentose phosphate pathway 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 Carbohydrate 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.