試題詳解

53. As a ribosome translocates along an mRNA molecule by one codon, which of the following occurs?
(A) The tRNA that was in the A site moves into the P site.
(B) The tRNA that was in the P site moves into the A site. 
(C) The tRNA that was in the P site moves to the E site and is released.
(D) The tRNA that was in the A site departs from the ribosome.
(E) Both A and C are correct.