Question

what is endoplasmic reticulum
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Answer 1

Explanation:

a 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.

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Answer 2

Answer:

Endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins

Explanation:

There are 2 types of ER, Smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum(RER). this smooth endoplasmic reticulum does not have any ribosomes attached to its surface. the rough endoplasmic reticulum have ribosomes attached to its surface.