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Q: Selectively permeable membranes are those that allow penetration of ...............
  • A. neither solvent nor solute molecules
  • B. only solvent molecules but not solute molecules
  • C. both solvent and solute molecules
  • D. only solute molecules but not solvent molecules
Correct Answer: Option B - Selectively permeable membranes are a kind of biological or synthetic membranes which allows or inhibits movement of molecules or ions to others, via osmosis or reverse osmosis. Be it selective permeable membrane or semi-permeable membrane both allow the movement of solvent molecules to pass through them but not solute molecules.
B. Selectively permeable membranes are a kind of biological or synthetic membranes which allows or inhibits movement of molecules or ions to others, via osmosis or reverse osmosis. Be it selective permeable membrane or semi-permeable membrane both allow the movement of solvent molecules to pass through them but not solute molecules.

Explanations:

Selectively permeable membranes are a kind of biological or synthetic membranes which allows or inhibits movement of molecules or ions to others, via osmosis or reverse osmosis. Be it selective permeable membrane or semi-permeable membrane both allow the movement of solvent molecules to pass through them but not solute molecules.