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helperbot27

Answer:

In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.

adefioyelaoye

Some large molecules and charged ions get through the cell membrane as

a result of osmosis, diffusion, facilitated diffusion etc.

Molecules get through the cell membrane through diffusion which is the

movement of substances from a region of higher concentration to a region

of lower concentration.

Facilitated diffusion is the same with diffusion but it makes use of a

substance for transport.

Read more on https://brainly.com/question/25027975

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