Which of the following is NOT a step in protein synthesis?
A)chain termination
B)unwinding of two strands of mRNA
C)initiation
D)activation of tRNA
E)chain elongation

Question

Quizplus · Accepted Answer

Protein synthesis occurs in the ribosomes, with the mRNA strand serving as a template for the synthesis of a polypeptide chain. The steps in protein synthesis include initiation, elongation, and termination. During initiation, mRNA binds to the ribosome and the first codon is identified. Then, tRNA molecules carrying specific amino acids bind to their complementary codons on the mRNA. The ribosome moves along the mRNA strand in a process called elongation, adding amino acids one by one to the growing polypeptide chain. Eventually, a stop codon is reached and the polypeptide chain is released in a step called chain termination. Unwinding of the two strands of mRNA is not a necessary step in protein synthesis. Rather, the mRNA strand remains a single stranded molecule throughout the process.

Which of the Following Is NOT a Step in Protein