Answer:
Answer:
Explanation:
1. Ions cannot easily pass through the cell membrane on its own, the presence of special protein channels will allow specific ions through the membrane. These ion channels are also used to regulate the concentration of ions inside and outside of cells.
2. Both diffusion and osmosis are describes movements of molecules, describing the passive movement of substances that doesn't require energy, but diffusion can be used to describe movement of various substances. Whereas, osmosis specifically refer to the movement of water across a selectively permeable membrane from a higher water potential region to another region with lower water potential.
Phagocytosis, is a completely different concept, it is an active process that requires energy for the engulfment of particles by cells.
