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zaydabujad1 zaydabujad1
  • 29-06-2016
  • Biology
Answered

When does the cell have to use active transport

Awhen the cell is low on energy

Bwhen the cell is in a highly concentrated solution

Cto move molecules across the membrane quickly

Dto move molecules across the membrane against a gradient

Verified Answer :

miguelt679
miguelt679 miguelt679
  • 29-06-2016
Dto move molecules across the membrane against a gradient
Answer Link

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