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Bio-Membranes and Vacuoles

Difference be...

Question

Difference between freely permeable membrane and impermeable membrane

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Solution

A membrane is a material or tissue that acts as a barrier or divider between two regions. A permeable membrane allows all substances to flow freely across the membrane. A semi-permeable membrane allows some substances to cross the membrane, but not others. An impermeable membrane blocks the movement of all substances.

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what is the difference between generally permeable and selectively permeable membrane ?

Q. Differentiate between selectively permeable and semipermeable membrane.

Osmosis and diffusion are the same except that in osmosis there is

(a) a freely permeable membrane

(b) a cell wall in between

(c) a selectively permeable membrane in between

(d) an endless inflow of water into a cell

Q. Match the terms to these definitions.
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..........Diffusion of.water through the plasma membrane.

Q. Assertion :In dializer, the plasma proteins of the blood, cannot be filtered but molecules like urea, uric acid, creatinine and ions can be filtered. Reason: The cellophane membrane used in dialyzer is permeable to macromolecules but impermeable to micromolecules.

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