Explain how diffusion restored homeostasis during the dialysis treatment

Explanation:

If the patient's blood is too low in ions, they will diffuse from the dialysis fluid into the blood, restoring the ideal level in the blood.

If the patient's blood is too high in ions, the excess ions will diffuse from the blood to the dialysis fluid.

The other person is right as well word for word,

The functions of a membrane protein include cell cohesion, relaying signals between the inside and outside of a cell and transporting proteins across the membrane. A membrane protein is a protein that is attached to a cell and interacts with biological membranes. Each type of membrane protein has a different function.