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Question

The membrane that allows some of the molecules to pass through it and prevent the others is called

A
permeable membrane
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B
semipermeable membrane
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C
selectively or differentially permeable membrane
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D
impermeable membrane
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Solution

The correct option is C selectively or differentially permeable membrane
A selectively or differentially permeable membrane is a normal semipermeable membrane but allows selective transport of certain solutes. Example: Cell membrane.

A permeable membrane is one which allows the movement of both the solvent and solute across it. Example: Cell wall.

A semipermeable membrane allows the passage of solvent molecules across it but prevents the passage of solutes. Example: Animal bladder.

An impermeable membrane will not allow any molecules to pass across it. Example: Cuticle deposited over the epidermal layer.

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