Question

what is the plasma membrane composed of? And who is responsible for transportation of materials in a cell? ​

Answer 1

Answer:

With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

Endoplasmic reticulum is the cell organelle responsible for transport of substances inside the cell.

Answer 2

Answer:

the plasma membrane composed of lipids and proteins.Mitochondria  is responsible for transportation of materials in a cell

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