OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What must happen to a newly made polypeptide before it can be secreted from a cell?
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it must be translated by a ribosome found in the cytoplasm of the cell and then sent toward the cell membrane
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it must be produced by a ribosome on the rough ER and sent to the golgi apparatus
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It must be produced by a ribosome in the golgi apparatus and sent to the rough ER.
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None of the above
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Explanation:
Detailed explanation-1: -Ribosomes engaged in the synthesis of proteins that are destined for secretion are then targeted to the endoplasmic reticulum by a signal sequence at the amino terminus of the growing polypeptide chain.
Detailed explanation-2: -Newly synthesized proteins enter the endomembrane system through the endoplasmic reticulum. From there them move through the Golgi apparatus and into either the Secretory Pathway or the Lysosomal Pathway.
There is 1 question to complete.