Question

Explain the structure of plasma membrane.

Answer 1

• Plasma membrane acts as a selectively permeable membrane. It allows entry of those useful substances which are needed for the cell. It does not allow entry of the harmful and unwanted substances.
• Plasma membrane keeps the homeostasis in the cell. The cell is kept in steady state even if the external environment changes.
• Plasma membrane is responsible for processes of endocytosis and exocytosis.
• The processes of diffusion and osmosis are possible only due to plasma membrane.
• In animal cells, plasma membrane is the outermost protective covering of the cell.