endoplasmic reticulamn definition and explaination
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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 . All eukaryotic cells contain an endoplasmic reticulum (ER). In animal cells, the ER usually constitutes more than half of the membranous content of the cell. Differences in certain physical and functional characteristics distinguish the two types of ER, known as rough ER and smooth ER.
Er is a eukaryotic cell organally.
A network of tiny tubular structures scattered in the cytoplasm is called endoplasmic reticulum
Ribosomes are attached to the outer surface of Endoplasmic reticulum. If I ribisomes are present then it is called rough endoplasmic reticulum and if the ribosomes are absent then it is called smooth endoplasmic reticulum.