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Answer :
1) A semi-permeable membrane and a selectively permeable membrane are actually the same thing.
2) Dialysis does not involve active transport. It is a passive process that relies on diffusion across a semi-permeable membrane.
Given that;
Osmosis is the net diffusion of water across a semi-permeable (or selectively permeable) membrane.
1) A semi-permeable membrane and a selectively permeable membrane are actually the same thing!
They both refer to a membrane that allows certain substances to pass through while restricting others based on size or charge.
So, they're just different terms for the same concept.
2) Dialysis does not involve active transport. It is a passive process that relies on diffusion across a semi-permeable membrane.
Dialysis is used to remove waste products and excess fluid from the blood when the kidneys are not functioning properly.
By utilizing a dialysis machine, waste products and excess fluid passively diffuse from the blood into a dialysate solution through the semi-permeable membrane.
No energy is required for this process, making it a form of passive transport.
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Final answer:
A semi-permeable membrane allows certain substances to pass, while a selectively permeable membrane provides more control over what can pass through. Dialysis does not involve active transport; it uses diffusion, requiring no energy input.
Explanation:
A semi-permeable membrane and a selectively permeable membrane are terms often used interchangeably. Both refer to a barrier that allows certain substances to pass through while preventing others. The key difference is that a selectively permeable membrane has more control over what passes through, allowing specific molecules to cross based on factors such as size, charge, or chemical nature.
As for dialysis, it does not involve active transport. Dialysis uses the process of diffusion, similar to osmosis, where solutes move from an area of higher concentration to one of lower concentration, but does not require energy input (as with active transport). The semi-permeable membrane in a dialysis machine allows small waste materials from the blood to pass through, while larger beneficial blood components, such as cells and proteins, are retained.
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