1.

How many ribosomal binding sites are there and what are their functions?

A. There are three sites. A site binds aminoacyl-tRNA, P site binds peptidyl-tRNA, E site binds free tRNA before ribosomal exit
B. There are three sites. A site binds peptidyl-tRNA, P site binds aminoacyl-tRNA, E site binds free tRNA before ribosomal exit
C. There are two sites. A site binds free tRNA before ribosomal exit, P site binds aminoacyl-tRNA
D. There are three sites. A site binds free tRNA before ribosomal exit, P site binds aminoacyl-tRNA, E site binds peptidyl-tRNA
Answer» B. There are three sites. A site binds peptidyl-tRNA, P site binds aminoacyl-tRNA, E site binds free tRNA before ribosomal exit


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