Ribosomes that do not anchor on the surface of the rough endoplasmic reticulum during translation most probably
A)are synthesizing cytoplasmic proteins.
B)have a defect in ribosomal proteins that allow attachment to the surface.
C)have a signal peptidase error.
D)do not make the appropriate anchor protein.
E)All of the above are probable reasons.

Question

Quizplus · Accepted Answer

Ribosomes that are not attached to the rough endoplasmic reticulum (ER) are typically found in the cytoplasm, synthesizing proteins that function within the cytosol rather than those destined for secretion or for the membrane. The other options (B, C, D) suggest defects that are not typically associated with the localization of ribosomes to the cytoplasm versus the ER.

Ribosomes That Do Not Anchor on the Surface of the Rough