Gluconeogenesis: 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 · Gluconeogenesis

Sample item

Which enzyme bypasses pyruvate kinase during gluconeogenesis?

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

The answer and the reasoning

C. Pyruvate carboxylase

This item reviews Gluconeogenesis; Pyruvate carboxylase is the best answer because it directly fits the mechanism or morphology described.

Option by option

  • A. Glucokinase

    Glucokinase is not supported by the stated finding.

  • B. Phosphoglucose isomerase

    Phosphoglucose isomerase is plausible but is not the best fit here.

  • C. Pyruvate carboxylase (correct)

    Correct. Pyruvate carboxylase is supported by the defining finding.

  • D. Aldolase

    Aldolase does not match the key mechanism or pattern.

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 C, Pyruvate carboxylase. This item reviews Gluconeogenesis; Pyruvate carboxylase is the best answer because it directly fits the mechanism or morphology described.

Why is "Glucokinase" not the answer?

Glucokinase is not supported by the stated finding.

Why is "Phosphoglucose isomerase" not the answer?

Phosphoglucose isomerase is plausible but is not the best fit here.

Why is "Aldolase" not the answer?

Aldolase does not match the key mechanism or pattern.

What concept does this question test?

It tests Gluconeogenesis in Biochemistry. The correct option holds because: Correct. Pyruvate carboxylase is supported by the defining finding.

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 Gluconeogenesis?

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.