Biology, 30.01.2021 01:00 riptaylorsreputation
When would a cell be expected to use an active transport mechanism to move a substance from the outside environment into the cytoplasm?
A. when a concentration gradient exists and more of the substance is on the inside of the cell
B. when a concentration gradient exists and more of the substance is on the outside of the cell
C. when no concentration gradient for the substance exists across the cell membrane
D. when a concentration gradient exists, and the same amount of substance is found inside and outside the cell
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When would a cell be expected to use an active transport mechanism to move a substance from the outs...
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