Question

What is the difference between semipermeable membrane and selectively permeable membrane?

Answer 1

• Semi-permeable membrane allows pure solvent molecules and not the solute particles to pass through.
• Selectively permeable membrane allows selected solutes to pass through it to a limited extent.
• Also, a selectively permeable membrane requires constant energy for its maintenance, whereas a semipermeable membrane does not require constant energy for its maintenance.

Examples:

• Semi permeable membrane - Egg membrane
• ​​​​​​​Selectively permeable membrane - Plasmalemma