What is the process of transcription?

Question

BlackTom AI · Accepted Answer

Question: What is the process of transcription?

Option 1: 'Synthesis of a DNA molecule from an RNA molecule' — This describes transcription in the reverse direction and is not how transcription works; it would imply RNA serving as a template to make DNA, which corresponds to reverse transcription, not transcription. Therefore this option is incorrect.

Option 2: 'Synthesis of a protein from an RNA molecule' — This describes translation, where ribosomes interpret an RNA sequence to assemble a polypeptide; transcription is an earlier step that creates the RNA template. Thus this option is incorrect.

Option 3: 'Synthesis of an RNA molecule from a protein' — Proteins are not used as templates to synthesize RNA in standard cellular processes; this option misstates the direction and the molecules involved, making it inaccurate. Therefore this option is incorrect.

Option 4: 'Synthesis of an RNA molecule from a DNA molecule' — This matches the textbook definition of transcription: the process by which RNA polymerase reads a DNA template and constructs a complementary RNA transcript. The directionality (DNA to RNA) and the type of product (RNA) align with canonical transcription. Therefore this option is correct.

What is the process of transcription? Single choice

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