tyrese4502 tyrese4502
  • 16-10-2017
  • Biology
contestada

The movement of molecules across a membrane against their concentration gradient, at the expense of atp energy, is called ______ ____________________.

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jamiexx
jamiexx jamiexx
  • 16-10-2017
active transport. this is the only transfer of material that is again the concentration gradient, unlike diffusion or osmosis
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