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STD 12 - 5. molecular basis of inheritance — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
Select the correct statement regarding protein synthesis.
  • ✓
    When the small subunit of the ribosome encounters an $mRNA$ the process of translation begins.
  • B
    Peptidase catalyses the formation of peptide bond.
  • C
    $UTRs$ are present between the start codon and stop codon.
  • D
    At the end of translation, the release factor binds to the initiation codon.
✓

Answer

Correct option: A.
When the small subunit of the ribosome encounters an $mRNA$ the process of translation begins.
a
Peptidase catalyses the breaking of peptide bond. The $UTRs$ are present at both $5 \phi$-end (before start codon) and $3'-end$ (after stop codon). At the end of translation release factor binds to the stop codon, terminating translation and releasing the complete polypeptide from the ribosome.

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