Question

What happens if endoplasmic reticulum is absent in plant cell?​

Answer 1

Answer:

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Without the RER the cell is not able to synthesis new plasma membrane proteins, lysosomal enzymes, proteines for the Golgi apparatus and proteins for extracellular secretion. Because these kind of proteins are synthesised in the RER.

The smooth ER has an important role in lipid and steroid synthesis, it is a storage for intracellular calcium as well. Without ER in the skeletal muscle fibers couldn’t happen muscle contraction.

In the absence of these cellular mechanisms the cell would probably die.

Maybe the most deadly for the cells is that they can’t change their membrane proteins for new ones without secretion. And the continuous damage to the membrane proteins makes the cells unable to interact with the extracellular matrix and more susceptible to apoptosis and phagocytosis.

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