15 How do cells maintain homeostasis without using energy? A Membrane proteins breakdown molecules to move other molecules from low
concentration to high concentration
B Membrane proteins use the negative charge inside of the cell to increase the
concentration of a chemical inside of the cell
C Maintaining osmotic balance by taking in or releasing water to match the water
concentration of the extracellular environment
D Form the cell membrane around food to create a vacuole that is kept separate
from the rest of the cytoplasm while enzymes break down the food