LABORATORY REVIEW
DIFFUSION AND OSMOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A membrane that all particles can pass through.
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A membrane that only some particles can pass through.
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A membrane that absorbs all particles.
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A membrane that absorbs some particles.
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Detailed explanation-1: -A membrane which allows certain substances to pass through it, but not others is called a selectively permeable membrane.
Detailed explanation-2: -A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized “facilitated diffusion". ( Wikipedia)
Detailed explanation-3: -When a membrane is semi-permeable or partially permeable it means water and certain substances in solution can pass through it but many other molecules cannot. An example is the cell membrane that makes up the outside of animal cells.
Detailed explanation-4: -Biological membranes An example of a biological semi-permeable membrane is the lipid bilayer, on which is based the plasma membrane that surrounds all biological cells.