Question

Osmosis is the passage of water through a semipermeable membrane from

• A. A higher concentration of water molecules to lower concentration
• B. Lower concentration of water molecules to higher concentration
• C. Equal concentration of water molecules
• D. None of the above

Answer 1

Answer: (A)

Osmosis is the migration of solvent from a hypotonic solution (of lower concentration) to the hypertonic solution (of higher concentration) through a semipermeable membrane. The movement of water out of the cell is called exosmosis while movement of water inside cell is called endosmosis.