Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 5 - No. 16)
What is the role of the cell membrane during osmosis?
It is fully permeable to all substances.
It is impermeable to water molecules.
It is selectively permeable, allowing water to pass through while restricting solute movement.
It is solely responsible for creating the concentration gradient.
Explanation
The cell membrane is semipermeable, letting some things (like water) through and blocking others (like large solute molecules).
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