Question 1
The shape of a protein is
ultimately determined by
◦ the interaction of R groups.
◦ interaction with other polypeptide chains.
◦ the amino acid sequence.
◦ bonds formed with other proteins.
◦ none of these.
Question 2
Two tRNA molecules occupy the P and A sites in a ribosome. The amino acids they carry are joined by a peptide bond. What is the
very next event that occurs?
◦ The tRNA in the P site detaches and leaves the ribosome.
◦ A third tRNA enters the ribosome.
◦ The ribosome moves one codon down the mRNA.
◦ The large subunit leaves the ribosome.
◦ A new amino acid is joined to the tRNA in the P site.