Question

Plasma membrane is:

• A. Non-selective barrier
• B. Selective barrier
• C. Impermeable
• D. Made of cellulose

Answer 1

Answer:

B. Selective barrier

• A membrane is a selective barrier; it allows some things to pass through but stops others.

• Such things may be molecules, ions, or other small particles.

• Membranes can be generally classified into synthetic membranes and biological membranes.