During translation the polypeptide chain is synthesized starting from itsGroup of answer choices5' end3' endC terminusN terminusboth a and d
Question
During translation the polypeptide chain is synthesized starting from its
- Group of answer choices
- 5' end
- 3' end
- C terminus
- N terminus
- both a and d
Solution
Answer
The correct answer is N terminus.
During protein synthesis (translation), the polypeptide chain is synthesized beginning at the N terminus, which corresponds to the 5' end of the mRNA. The ribosome reads the mRNA from the 5' to the 3' end, and as a result, the amino acids are added to the growing polypeptide chain starting from the N terminal end and extending towards the C terminal end. The C terminus corresponds to the 3' end of the mRNA, where the synthesis stops.
Summary
Thus, the polypeptide synthesis proceeds from the N terminus to the C terminus, making "N terminus" the correct choice among the provided options.
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