The E-site, also known as the exit site, is responsible for releasing the tRNA after it has delivered its amino acid to the growing polypeptide chain. It is found on the ribosome, not on the RNA polymerase enzyme, and is not specific to the 35S polysome. The A-site is the aminoacyl site, where the incoming aminoacyl-tRNA binds to the ribosome. Therefore, the correct answer is B.

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The E-Site

Question 24

Multiple Choice

The E-site

A) is found on the RNA polymerase enzyme.
B) is responsible for the release of the tRNA.
C) is found on the 35S polysome.
D) is the eminoacyl site.
E) is responsible for the release of the tRNA AND is the eminoacyl site.

Correct Answer: