Molecular biology: 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 · Molecular biology

Sample item

Which process removes introns from eukaryotic precursor mRNA?

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

The answer and the reasoning

D. RNA splicing

RNA splicing removes introns and joins exons in precursor mRNA before translation, allowing mature transcripts to encode protein.

Option by option

  • A. Transamination

    Transamination transfers amino groups.

  • B. Translation

    Translation converts mRNA sequence to protein.

  • C. DNA replication

    Replication copies DNA.

  • D. RNA splicing (correct)

    Correct: splicing edits precursor mRNA.

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 D, RNA splicing. RNA splicing removes introns and joins exons in precursor mRNA before translation, allowing mature transcripts to encode protein.

Why is "Transamination" not the answer?

Transamination transfers amino groups.

Why is "Translation" not the answer?

Translation converts mRNA sequence to protein.

Why is "DNA replication" not the answer?

Replication copies DNA.

What concept does this question test?

It tests Molecular biology in Biochemistry. The correct option holds because: Correct: splicing edits precursor mRNA.

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 Molecular biology?

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.