You Place Yeast Cells in a Glucose Solution and Plot

You place yeast cells in a glucose solution and plot the rate of glucose uptake.You see an increase in glucose uptake over time (that is,the longer the yeast are in the sugar solution,the faster they can take sugar into the cell) .The most likely explanation for this is the cell membrane is becoming more permeable because _____.

A) the yeast is inserting more cholesterol into the membrane
B) the difference in glucose concentration between the inside of the cell and outside of the cell is increasing
C) the difference in glucose concentration between the inside of the cell and outside of the cell is decreasing
D) the yeast is inserting more glucose protein transporters into its membrane