Question

E. Plasma membrane is
a. Selectively permeable
b. Permeable
c. Impermeable
d. Semipermeable​

Answer 1

Answer:

Plasma membrane is called selectively permeable membrane.

Explanation:

The cell membrane has tiny gates that act like doors and windows in a room. This property of only letting certain things in and out is called selective permeability.

Hope it would help you!!!

Answer 2

$\huge{\underline{\boxed{\frak \red{Plasma \: membrane :-}}}}$

• [option A] Selectively permeable

$\rule{300}1$

• It is the boundary for each cell present in both animals and plants. Its components are molecules of lipids and proteins. The main function of plasma membrane or Cell Membrane is to allow selective molecules through it, acts as a mechanical barrier for internal components and surroundings.That's why cell membrane is also called Selectively permeable memebrane.
• $\rm\ CO_2 \: and \: O_2$ move across the cell membrane by a process called Diffusion (spontaneous movement of a substance from a region of high concentration to low concentration, where concentration of solute is low).
• The movement of $\rm\ H_2O$ across the plasma membrane occurs by the process of osmosis.The movement of solvent from region of high concentration through a semipermeable membrane to a region of low water concentration is termed as osmosis.Movement of water across the cell membrane is affected by the amount of solute present in cell.