Question

what is endoplasmic reticulum

Answer 1

network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.

Answer 2

endoplasmic reticulum is a cellorganell
if ribosomes are attached to it then it is called rer(rough endoplasmic reticulum)
if ribosomes are not attached to it then it is called ser(smooth endoplasmic reticulum)

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