Which of the following events does not occur in rough endoplasmic reti

1.	Which of the following events does not occur in rough endoplasmic reticulum ?(1) Protein folding(2) Protein glycosylation(3) Cleavage of signal peptide(4) Phospholipid synthesis
Answer» Correct option (4) Phospholipid synthesis Explanation Phospholipid synthesis does not occur in RER. It occurs inside Smooth Endoplasmic Reticulum ( SER). A signal peptide is a short peptide present at the N-terminus of the newly synthesised proteins. It targets them to the ER and is then cleaved off. RER synthesises proteins. It bears enzymes for modifying polypeptides synthesised by attached ribosomes, e.g. glycosylation.

Which of the following events does not occur in rough endoplasmic reticulum ?(1) Protein folding(2) Protein glycosylation(3) Cleavage of signal peptide(4) Phospholipid synthesis

Answer»

Correct option (4) Phospholipid synthesis

Explanation

Phospholipid synthesis does not occur in RER. It occurs inside Smooth Endoplasmic

Reticulum ( SER). A signal peptide is a short peptide present at the N-terminus of the newly synthesised proteins. It targets them to the ER and is then cleaved off. RER synthesises proteins. It bears enzymes for modifying polypeptides synthesised by attached ribosomes, e.g. glycosylation.

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Which of the following events does not occur in rough endoplasmic reticulum ?(1) Protein folding(2) Protein glycosylation(3) Cleavage of signal peptide(4) Phospholipid synthesis

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