what do u guys think a pen is?
is it a pen with ink in it or something else?
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What is ER?
\huge\mathrm{\purple{Answer}}Answer
The endoplasmic reticulum (ER) is a large network of membrane bound tubes and sheets. The ER is similar structure to the plasma membrane.
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There are two types of ER :-
✯Rough endoplasmic reticulum(RER).
✯ Smooth endoplasmic reticulum(SER).
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