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 is the principal storage carbohydrate in animals?

ASucroseBCelluloseCGlycogenDLactose

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

The answer and the reasoning

C. Glycogen

Glycogen is a highly branched glucose polymer stored mainly in liver and skeletal muscle for short-term energy and blood-glucose support.

Option by option

A. Sucrose
Sucrose is a plant-derived glucose-fructose disaccharide.
B. Cellulose
Cellulose is a structural plant polysaccharide.
C. Glycogen (correct)
Correct: glycogen is the animal storage form of glucose.
D. Lactose
Lactose is a milk disaccharide.

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.

Questions about this Biochemistry question

What is the answer to this Biochemistry question?

The best answer is C, Glycogen. Glycogen is a highly branched glucose polymer stored mainly in liver and skeletal muscle for short-term energy and blood-glucose support.

Why is "Sucrose" not the answer?

Sucrose is a plant-derived glucose-fructose disaccharide.

Why is "Cellulose" not the answer?

Cellulose is a structural plant polysaccharide.

Why is "Lactose" not the answer?

Lactose is a milk disaccharide.

What concept does this question test?

It tests Carbohydrate metabolism in Biochemistry. The correct option holds because: Correct: glycogen is the animal storage form of glucose.

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.