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Question
In translation, an initiation complex consists of ______.
Options
an initiator tRNA
a large ribosomal subunit
a small ribosomal subunit
the start codon of mRNA
MCQ
Fill in the Blanks
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Solution
In translation, an initiation complex consists of a large ribosomal subunit.
Explanation:
The “assembled” initiation complex means the intact ribosome ready to start elongation: after the small (40S/30S) subunit, mRNA (start codon) and initiator tRNA pair, the large (60S/50S) subunit joins to form the complete initiation complex (80S in eukaryotes, 70S in prokaryotes), so the large subunit is included.
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