In all organisms,active transport across a membrane requires

Question

Quizplus · Accepted Answer

Active transport across a membrane requires an asymmetric distribution of ions across a membrane, as this creates a concentration gradient that can be used to drive the movement of ions against their electrochemical gradient. This process requires energy, typically in the form of ATP, and allows the cell to maintain different concentrations of ions on either side of the membrane. Choice A is incorrect because equal concentrations of ions would not create a gradient for active transport. Choice B is incorrect because a resting potential of 0 mV would not allow for ion movement against their electrochemical gradient. Choice C is incorrect because the direction of the electrochemical potential is not indicative of energy input or output in active transport. Choice E is incorrect because Choice D alone is the best answer.

In All Organisms,active Transport Across a Membrane Requires