Final answer:
Osmosis is the diffusion of water molecules across a selectively permeable membrane. When too much water enters a cell during osmosis, it can cause the cell to burst in a process called lysis.
Step-by-step explanation:
Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of higher concentration to an area of lower concentration. When too much water enters a cell during osmosis, the cell will swell and potentially burst. This process is called lysis.