Molecular Basis Of Inheritance Ques 110
110. Which step of translation does not consume a high energy phosphate bond?
[1997]
(a) Translocation
(b) Amino acid activation
(c) Peptidyl-transferase reaction
(d) Aminoacyl tRNA binding to active ribosomal site
Show Answer
Answer : c
Hints & Solution
(c) Only the peptidyl transferase reaction does not require energy. The aminoacyl-tRNA binding to ribosome involves elongation factors and energy (GTP). Amino acid activation requires energy (the cleavage of ATP to AMP and PPi). Translocation requires an elongation factors and energy (GTP).
BETA
