During dialysis, what moves across a semi-permeable membrane (and how)

saraalalwane

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2022-09-11

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During dialysis, what moves across a semi-permeable membrane (and how)?

Water molecules by diffusion from the region of high solute concentration to the region of low solute concentration.
Water molecules by filtration from the region of high hydrostatic pressure to the region of low hydrostatic pressure.
Solutes by diffusion from the region of high solute concentration to the region of low solute concentration.
Solutes by filtration from the region of low hydrostatic pressure to the region of high hydrostatic pressure.

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saraalalwane

2022-09-11

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C: dialysis refers to movement of solutes (not water). Choice D is

wrong as filtration refers to movement due to hydrostatic pressure difference

from the solution under higher pressure to low pressure.

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