Q171 / 200 · NEET 2022 (Phase 1) · Zoology

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

  • A
    The larger subunit of ribosome encounters mRNA
  • B
    Both the subunits join together to bind with mRNA
  • C
    The tRNA is activated and the larger subunit of ribosome encounters mRNA
  • Correct answer
    D
    The small subunit of ribosome encounters mRNA

Solution

The cellular factory responsible for synthesising proteins is the ribosome. The ribosome consists of structural RNAs and about 80 different proteins.
In its inactive state, it exists as two subunits; a large subunit and a small subunit. When the small subunit encounters an mRNA, the process of translation of the mRNA to protein begins.

Hence, the correct answer is option: 'D'.

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