15. Gene Expression

The P site of a ribosome does which of the following?

During translation, amino acid chain elongation occurs until __________.

The first amino acid inserted into a new polypeptide chain in eukaryotic cells is usually __________.

Where is the start codon located? a. at the start (5′ end) of the mRNA b. in the DNA just upstream of where transcription starts c. at the downstream end of the 5′ untranslated region (UTR) d. at the upstream end of the 3′ untranslated region (UTR)

In what ways are a promoter and a start codon similar? In what ways are they different?