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NEET 2022, Biology Q30: Transcription and Translation

NEET2022Biology
Q.

The process of translation of mRNA to proteins begins as soon as :

  1. A

    The small subunit of ribosome encounters mRNA

  2. B

    The larger subunit of ribosome encounters mRNA

  3. C

    Both the subunits join together to bind with mRNA

  4. D

    The tRNA is activated and the larger subunit of ribosome encounters mRNA

Solution

Translation initiation begins when the small ribosomal subunit binds to the mRNA at the initiation codon. This places the initiator tRNA at the start codon, after which the large subunit joins to form the complete initiation complex.

So the very first step that commits the system to translation is the encounter between mRNA and the small ribosomal subunit.

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