If the concentration of a solute is the same both inside and outside the cell,what might you expect with regard to its transport by a membrane protein?
A)Since there is no concentration gradient,no transport either in or out of the cell is possible.
B)Movement of the solute across the membrane could occur and cause accumulation on one side of the membrane by an active transport protein.
C)The transport protein has been saturated.
D)The solute must be phosphorylated with a phosphate group from ATP before further transport can occur.

Question

Quizplus · Accepted Answer

Even when the concentration of a solute is the same on both sides of the membrane, active transport proteins can move solutes against their concentration gradient, using energy typically from ATP, to cause accumulation on one side of the membrane.

If the Concentration of a Solute Is the Same Both