26. In the protein synthesis tRNA carrying the amino acid enters from which site of the ribosome: a.A-site b. P-site c.Anticodon site d. E-site
Option A. The ribosome has three sites for tRNA binding, designated the P (peptidyl), A (aminoacyl), and E (exit) sites. The initiator methionyl tRNA is bound at the P site. The first step in elongation is the binding of the next aminoacyl tRNA to the A site by pairing with the second codon of the mRNA.