If this cell is permeable to water glucose and fructose but

If this cell is permeable to water, glucose, and fructose, but impermeable to sucrose, which of these solutes will exhibit a net diffusion into the cell?

Please select one:

(a) glucose

(b) glucose and fructose

(c) sucrose and fructose

(d) fructose

(e) sucrose

Cell 0.03 M sucrose 0.02 M glucose Environment 0.01 M sucrose 0.01 M glucose 0.01 M fructose

Solution

Answer:

(b) glucose and fructose

Sucrose = glucose + fructose

glucose and fructose concentrations are balenced by their movement. Sucrose concentraiton is also balanced by the glucose and fructose as both unite to form sucrose.