State the structure of Endoplasmic Reticulum
Answers
Answer:
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Explanation:
The structure of endoplasmic reticulum is shaped like a sac. Since ER is of two types, each has its own distinguishing features:
Rough Endoplasmic Reticulum Structure
The rough endoplasmic reticulum is named so because of its appearance.
It is a series of connected flattened sacs that have many ribosomes on their outer surface, hence the name.
It synthesises and secretes proteins in the liver, hormones and other substances in the glands.
Rough ER is prominent in cells where protein synthesis happens (such as hepatocytes)
Smooth Endoplasmic Reticulum Structure
The smooth endoplasmic reticulum, on the other hand, does not have ribosomes.
The smooth endoplasmic reticulum has a tubular form.
It is involved in the synthesis of phospholipids, the main lipids in cell membranes and are essential in the process of metabolism.
Smooth ER transports the products of the rough ER to other cellular organelles, especially the Golgi apparatus.
Answer:
The general structure of the endoplasmic reticulum is a network of membranes called cisternae. These sac-like structures are held together by the cytoskeleton. The phospholipid membrane encloses the cisternal space (or lumen), which is continuous with the perinuclear space but separate from the cytosol.
Explanation: