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atp, active transport / passive transport

How does Active Transport differ from assive transport with reference to ATP

yecats2885 Sat 07/06/08 21:05

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yecats2885
Sat 07/06/08
21:05

Question Author

meant passive not assive

periwinkle
Tue 17/06/08
15:55

by passive transport do you mean diffusion?
dffusion is movement of particles from an area of high concentration to an area of lower concentration across a partially permeable membrane down a concentration gradient
active transport if movement of particles against a concentation gradient from a lower concetration to a higher contration. ATP is needed to counteract the particles moving down a concentration gradient

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