Question

Which of the following are functions of plasma membrane?

• A. Helps in energy production
• B. Performs selective permeability
• C. Acts as mechanical barrier
• D. Provides shape

Answer 1

Answer: (B), (C), (D)

Provides shape

Plasma membrane provides a mechanical barrier between the inner components of the cell and external environment. It performs selective permeability, i.e, allows movement of selective substances in and out of the cell. It provides a definite shape to the cell.