Vitamins: 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 · Vitamins

Sample item

Which vitamin deficiency causes impaired collagen hydroxylation and scurvy?

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

The answer and the reasoning

C. Vitamin C

Vitamin C is required for collagen hydroxylation; deficiency weakens connective tissue and can cause bleeding gums, bruising, and poor wound healing.

Option by option

  • A. Vitamin A

    Vitamin A deficiency causes visual and epithelial effects.

  • B. Vitamin D

    Vitamin D deficiency impairs bone mineralization.

  • C. Vitamin C (correct)

    Correct: vitamin C supports stable collagen formation.

  • D. Vitamin B12

    Vitamin B12 deficiency affects DNA synthesis and nerves.

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, Vitamin C. Vitamin C is required for collagen hydroxylation; deficiency weakens connective tissue and can cause bleeding gums, bruising, and poor wound healing.

Why is "Vitamin A" not the answer?

Vitamin A deficiency causes visual and epithelial effects.

Why is "Vitamin D" not the answer?

Vitamin D deficiency impairs bone mineralization.

Why is "Vitamin B12" not the answer?

Vitamin B12 deficiency affects DNA synthesis and nerves.

What concept does this question test?

It tests Vitamins in Biochemistry. The correct option holds because: Correct: vitamin C supports stable collagen formation.

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 Vitamins?

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.