Cameron reads in his textbook that animal cells are composed of 90 percent water and 10 percent protein, carbohydrate, nucleic acid, lipid, and other molecules. He learns that homeostasis is the process by which this composition is maintained. How does an organelle in an animal cell control the content of water and other material in the cell? a. the cell wall splits apart to allow water and materials to enter the cell and waste products to leave the cell
b. the cell membrane is selectively permeable, whic controls the movement of materials in and out of the cell by passive and active transport
c. vacoules in the cell open and draw in the only materials needed from outside the cell
d .lysosomes move out the cell to capture and bring back needed materials