When a cell uses energy to move ions against an electrical or chemical gradient, what is the process called?
A) Passive transport
B) Neutral transport
C) Cotransport
D) Active transport
D
Feedback:
Active transport is what happens when cells use energy to move ions against an electrical or chemical gradient. Passive transport is another term for diffusion. There is no such thing as neutral transport. Cotransport is when the sodium ion and the solute are transported in the same direction.
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