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 megaloblastic anaemia with neurological impairment?

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

The answer and the reasoning

B. Vitamin B12

Vitamin B12 deficiency impairs DNA synthesis causing megaloblastic anaemia and can also damage posterior-column and corticospinal pathways.

Option by option

  • A. Vitamin K

    Vitamin K deficiency causes bleeding tendency.

  • B. Vitamin B12 (correct)

    Correct: B12 deficiency combines blood and neurologic findings.

  • C. Vitamin C

    Vitamin C deficiency causes scurvy.

  • D. Vitamin A

    Vitamin A deficiency impairs vision and epithelium.

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, Vitamin B12. Vitamin B12 deficiency impairs DNA synthesis causing megaloblastic anaemia and can also damage posterior-column and corticospinal pathways.

Why is "Vitamin K" not the answer?

Vitamin K deficiency causes bleeding tendency.

Why is "Vitamin C" not the answer?

Vitamin C deficiency causes scurvy.

Why is "Vitamin A" not the answer?

Vitamin A deficiency impairs vision and epithelium.

What concept does this question test?

It tests Vitamins in Biochemistry. The correct option holds because: Correct: B12 deficiency combines blood and neurologic findings.

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.