What amino acid is called for by the start codon (AUG)?

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Multiple Choice

What amino acid is called for by the start codon (AUG)?

Explanation:
The start codon AUG specifies methionine as the first amino acid in the growing polypeptide. The initiator tRNA, carrying methionine, recognizes AUG through its anticodon and brings methionine to the ribosome to start translation. In eukaryotes this is plain methionine; in bacteria the initiator carries N-formylmethionine, though the formyl group is usually removed later and internal AUGs still code for methionine during elongation.

The start codon AUG specifies methionine as the first amino acid in the growing polypeptide. The initiator tRNA, carrying methionine, recognizes AUG through its anticodon and brings methionine to the ribosome to start translation. In eukaryotes this is plain methionine; in bacteria the initiator carries N-formylmethionine, though the formyl group is usually removed later and internal AUGs still code for methionine during elongation.

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