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svp [43]
3 years ago
8

What happens on the outer surface of a cell?

Biology
1 answer:
Papessa [141]3 years ago
5 0
<span>The outer surface of a cell is surrounded by the plasma membrane, which marks the boundary between the cellular content and the external medium. The plasma membrane is a continuous film made up of molecules of lipids, proteins, and carbohydrates. Lipids form a double layer and proteins are arranged in an irregular and asymmetric way between them. These components have mobility, which gives the membrane a high degree of fluidity. It acts as a semipermeable and selective barrier regulating the chemical composition of the cell.</span>
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