Energy 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 · Energy metabolism

Sample item

What is the principal immediate cellular energy currency?

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

The answer and the reasoning

B. ATP

ATP stores readily transferable phosphate-bond energy and powers many cellular reactions, transport processes, and mechanical work.

Option by option

  • A. Cholesterol

    Cholesterol is a membrane and steroid precursor.

  • B. ATP (correct)

    Correct: ATP directly couples energy to cellular work.

  • C. Urea

    Urea is a nitrogen waste product.

  • D. DNA

    DNA stores genetic information.

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 B, ATP. ATP stores readily transferable phosphate-bond energy and powers many cellular reactions, transport processes, and mechanical work.

Why is "Cholesterol" not the answer?

Cholesterol is a membrane and steroid precursor.

Why is "Urea" not the answer?

Urea is a nitrogen waste product.

Why is "DNA" not the answer?

DNA stores genetic information.

What concept does this question test?

It tests Energy metabolism in Biochemistry. The correct option holds because: Correct: ATP directly couples energy to cellular work.

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 Energy 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.