Question

which molecule(s) will likely move into cells through the glut4 transmembrane protein when it is functioning?
glucose and insulin
any molecule that is in high concentration outside the cell
only insulin
only glucose

Explanation:

GLUT4 is a glucose transporter. It specifically facilitates the transport of glucose molecules. Insulin is a hormone that regulates GLUT4 activity but is not transported by GLUT4. GLUT4 is not a non - specific transporter for any molecule in high concentration outside the cell.

Answer:

only glucose