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7 terms

Vocab Biology 3.4

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Passive Transport
the movement of molecules across a cell membrane without energy input from a cell
Diffusion
the movement of molecules in a fluid or gas from a region of higher concentration to a region of lower concentration
Osmosis
When water molecules diffuse
isotonic
when a cell has the same concentration of dissolved particles
hypertonic
a solution that has a higher concentration of dissolved particles than a cell
hypotonic
a solution that has a lower concentration of dissolved particles than a cell
faciliated diffusion
the diffusion of molecules across a membrane through transport proteins