Question -
RER is rough due to the presence of _______ .
Options:
A .  ribosomes
B .  lysosomes
C .  DNA
D .  lipids
Answer: Option A : A Ribosomes, which are responsible for protein synthesis, are attached to the surface of rough endoplasmic reticulum (RER). Hence, RER appears to have a rough surface and is associated with protein synthesis.
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