1.

Mention two point of differences between SER and RER.

Answer»
S. No.SER (Smooth endoplasmic reticulum)RER (Rough endoplasmic reticulum)
(i)Smooth endoplasmic reticulum does not have ribosomes and is composed of vesicles and tubules.Rough endoplasmic reticulum have ribosomes on its outer surface and is composed of cisternae.
(ii)It synthesises steroids and lipids. It is related to secretion.Its main function is protein synthesis due to the presence of ribosomes on it.



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