AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Not permitting passage of a substance or substances
A
passive transport
B
exocytosis
C
impermeable
D
osmosis
Explanation: 

Detailed explanation-1: -Something that is impermeable does not allow water or liquid to pass through it. Made up of the prefix im-, meaning “not, ” and the adjective permeable, meaning “allowing to pass through, ” impermeable is used in much the same way as impervious or impenetrable.

Detailed explanation-2: -Permeable surfaces (also known as porous or pervious surfaces) allow water to percolate into the soil to filter out pollutants and recharge the water table. Impermeable/impervious surfaces are solid surfaces that don’t allow water to penetrate, forcing it to run off.

Detailed explanation-3: -An impermeable membrane is one through which no substance can pass. Semipermeable membranes are those which only let solvents, such as water, pass through them. Permeable membranes are those which let solvents and solutes, such as ions and molecules, to pass through them.

Detailed explanation-4: -Semi-permeable membranes are very thin layers of material which allow some things to pass through them, but prevent other things from passing through. Cell membranes are an example of semi-permeable membranes.

Detailed explanation-5: -Not allowing the passage of substances. Impermeable refers to a property of a membrane or channel pore in preventing or restricting the passage of substances. For example, the lipid bilayer portion of biological membranes is highly impermeable to ions and large polar molecules. See also permeable.

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