SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Distributes proteins
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packaging center for cells
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Garbage disposal for unnecessary cells
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Outer shell
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Detailed explanation-1: -The RER is associated with many roles in protein synthesis, which also include post-translational modifications, folding, and sorting. Membrane-bound ribosomes in the RER translate the mature mRNA transcript into amino acids that are attached to become polypeptides.
Detailed explanation-2: -Plasma membrane and lysosomal proteins also travel from the rough ER to the Golgi and then to their final destinations. Still other proteins travel through the initial steps of the secretory pathway but are then retained and function within either the ER or the Golgi apparatus.
Detailed explanation-3: -Rough ER contains two integral membrane proteins, ribophorins I and II, that have molecular masses of 65 kDa and 63 kDa, respectively.