Q

Selectively permeable membranes are those that allow penetration of .........

RRB Group D, 23-Aug-22 S-1 2022
✓ Answer: A Only solvent molecules but not solute molecules
A selectively permeable membrane, such as a cell membrane, allows only the passage of solvent molecules (like water) while restricting solute molecules (like ions or larger particles). This selective permeability helps maintain the internal environment of the cell by controlling the movement of substances in and out.
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