In cotransport
A) no ATP is used.
B) the diffusing substance moves in the opposite direction as the transported substance.
C) the diffusing substance moves in the same direction as the transported substance.
D) the substance moves directly through the cell membrane without the aid of proteins.
E) None of these choices are accurate for cotransport.

Question

Quizplus · Accepted Answer

In cotransport, the diffusing substance moves in the same direction as the transported substance. This process is energetically favorable as it uses the energy released by the movement of one substance down its concentration gradient to power the movement of another substance against its concentration gradient. ATP is used indirectly in cotransport, as it is required for the establishment of the concentration gradients that drive the process.

In Cotransport