Nutrients and waste both enter and leave cells through a process called a. effusion b. diffusion c. fusion d. emulsion

B, diffusion, is the correct answer. Nutrients and waste products, for example oxygen, glucose or carbon dioxide leave and enter cells through diffusion. This is where the concentration of a substance, for example carbon dioxide, is higher in the cell than the surrounding blood, so the substance leaves the area of high concentration to move to an area of low concentration.

Is that a negative 22 or a positive?