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.

Try it

Biochemistry · Carbohydrate metabolism

Sample item

What enzyme releases free glucose from hepatic glucose-6-phosphate?

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

The answer and the reasoning

A. Glucose-6-phosphatase

Glucose-6-phosphatase in liver and kidney converts glucose-6-phosphate to free glucose, allowing glucose export during fasting.

Option by option

  • A. Glucose-6-phosphatase (correct)

    Correct: glucose-6-phosphatase permits hepatic free-glucose release.

  • B. Glycogen synthase

    Glycogen synthase builds glycogen chains.

  • C. Aldolase B

    Aldolase B is involved in fructose metabolism.

  • D. Hexokinase

    Hexokinase phosphorylates incoming glucose in tissues.

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, Glucose-6-phosphatase. Glucose-6-phosphatase in liver and kidney converts glucose-6-phosphate to free glucose, allowing glucose export during fasting.

Why is "Glycogen synthase" not the answer?

Glycogen synthase builds glycogen chains.

Why is "Aldolase B" not the answer?

Aldolase B is involved in fructose metabolism.

Why is "Hexokinase" not the answer?

Hexokinase phosphorylates incoming glucose in tissues.

What concept does this question test?

It tests Carbohydrate metabolism in Biochemistry. The correct option holds because: Correct: glucose-6-phosphatase permits hepatic free-glucose release.

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.