Question

Which tissues rely on the GLUT4 transporter for glucose uptake?

a) Muscle and adipose tissue
b) Liver and kidney
c) Brain and pancreas
d) Skin and bone

Answer 1

Muscle and adipose tissue rely on the GLUT4 transporter for glucose uptake, which is activated by the presence of insulin.

Step-by-step explanation:

The tissues that rely on the GLUT4 transporter for glucose uptake are muscle and adipose tissue. The GLUT4 transporter is a protein that facilitates the entry of glucose into cells. This process is significantly enhanced by the presence of insulin, which triggers the fusion of GLUT4-containing vesicles with the plasma membrane, allowing glucose to be transported into the cell. While various tissues in the body use glucose, the brain, liver, kidney, GI tract, RBCs, and retina of the eye primarily utilize other transporters and mechanisms for glucose uptake, and are not as dependent on insulin for this process.