Active transport
A) moves molecules or ions along their concentration gradient.
B) involves carbohydrate pumps.
C) is associated with large numbers of mitochondria.
D) is associated with fat and skin cells.
E) cannot be done by animal cells.

Question

Quizplus · Accepted Answer

Active transport requires energy to move molecules or ions against their concentration gradient, and this energy is often provided by ATP generated by mitochondria. Hence, cells with high active transport activity, like kidney and nerve cells, are associated with large numbers of mitochondria.

Active Transport