Assuming this is a eukaryotic ribosome, which amino acid was brought to the ribo

Question

Assuming this is a eukaryotic ribosome, which amino acid was brought to the ribosome by the tRNA that has just left the E site? (We want the name of the particular amino acid.) Based on your answer for (a), the anticodon on the tRNA that left the E site must be (show polarity): Where will the codon currently in the A site be after the fourth tRNA (the one shown entering the A site above is the third) enters the ribosome? When the next amino acid is added to the peptide chain, the N-terminal amino acid will be in which site of the ribosome (A, P, or E)?

Explanation / Answer

a) The amnio acid carried by the tRNA which has just left the E site is Methionine as an "initiator" tRNA carrying the first amino acid in the protein, which is almost always methionine (Met)

b) UAC is the anticodon which codes the methionine is present on the tRNA that has just exit the E site

c) the codon the located on the mRNA

But the question 3 is incomplete

d) P site

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