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i need this for my project...

2007-10-31 08:57:53 · 1 answers · asked by bree $ 1 in Science & Mathematics Biology

1 answers

Sometimes the cells need to transport something against its concentration gradient. A good example is the Na+ pump to transport Na+ to the outside of the cell.

2007-10-31 09:05:27 · answer #1 · answered by OKIM IM 7 · 1 0

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