Regarding protein synthesis, which of the following statements is/are CORRECT?
A) There are three sites for tRNA attachment on the ribosomes called the D, R and S sites.
B) A nucleoside triphosphate involved in peptide chain elongation is GTP.
C) The amino acid residue placed during chain initiation on the N-terminus of proteins is serine.
D) Protein chain initiation in bacteria involves the interaction of the 20S, 25S and 50S ribosomal subunits.
E) All of the other answers are correct.

Question

Quizplus · Accepted Answer

Nucleoside triphosphate involved in peptide chain elongation is GTP. A is incorrect because there are three sites for tRNA attachment on the ribosomes called the A, P and E sites. C is incorrect because the amino acid residue placed during chain initiation on the N-terminus of proteins is methionine, not serine. D is incorrect because protein chain initiation in bacteria involves the interaction of the 30S and 50S ribosomal subunits, not the 20S, 25S, and 50S subunits.

Regarding Protein Synthesis, Which of the Following Statements Is/are CORRECT