Question

1. Skeletal muscle cells produce glucose carriers (GLUT 4 transporters). Rather then having these transporters continually on their surface, they store them inside vesicles within the cell. During exercise (muscular contraction), these vesicles fuse with the plasma membrane of the cell, inserting the transporters into the membrane. This allows glucose to enter the cell by passive transport. Which of the factors that affect simple diffusion has been altered in this example?

Answer 1