Which Statement About the Elongation Phase of Protein Synthesis Is

Multiple Choice

Which statement about the elongation phase of protein synthesis is TRUE?

A) At least five high-energy phosphoryl groups are expended for each peptide bond formed.
B) During elongation, incoming aminoacylated tRNAs are first bound in the P site.
C) Elongation factor EF-Tu facilitates translocation.
D) Peptidyl transferase catalyzes the attack of the carboxyl group of the incoming amino acid on an ester linkage in the nascent polypeptide.
E) Peptidyl transferase is a ribozyme.