Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 4 - No. 1)
What is the definition of a partially permeable membrane?
A membrane that allows all substances to pass through.
A membrane that allows only water molecules to pass through.
A membrane that allows only small molecules to pass through but restricts the passage of larger molecules.
A membrane that allows only solute molecules to pass through.
Explanation
A partially permeable membrane is one that allows certain substances to pass through (small molecules like water) but restricts the passage of others (large molecules like sugars and proteins).
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