Question

true/false. Lysosomes digest food particles brought into a cell by endocytosis. After a vesicle containing food particles fuses with a lysosome, H ions are transported into the lysosome from the cytosol. This significantly lowers the pH of the lysosome relative to the cytosol and activates the enzymes that digest the particles.

Answer 1

True. Lysosomes are membrane-bound organelles that contain digestive enzymes that can break down large molecules, such as proteins, carbohydrates, and lipids. When a vesicle containing food particles fuses with a lysosome, the pH of the lysosome is lowered relative to the cytosol by the transport of H ions into the lysosome from the cytosol. This lower pH activates the enzymes that digest the particles.