Translation proceeds in a series of steps in the active site of the ribosome. Which of the following are important steps in polypeptide formation?
A. The incoming aminoacyl-tRNA forms a covalent bond with the RNA in the A site.
B. The hydrogen bonds formed between ribosomal RNA and tRNAs position the aminoacyl-tRNAs to catalyze peptide bond formation.
C. The tRNA holding the growing polypeptide moves from the P site to the A site after peptide bond formation.
D. The RNA in the P site makes hydrogen bonds with the 3' end of the aminoacyl-tRNA.
Ans:
B. The hydrogen bonds formed between ribosomal RNA and tRNAs position the aminoacyl-tRNAs to catalyze peptide bond formation.
D. The RNA in the P site makes hydrogen bonds with the 3' end of the aminoacyl-tRNA.
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