Ketogenesis is the conversion of acetyl CoA into Ketone bodies. CoA stands for fatty acid fragments, not whole fat. The fat moelcule is first broken into fatty acids and then the ketogenesis process takes place. The conversion of acetyl CoA into ketone bodies happens whenever acetylCoA cannot be oxidized.
Explanation: The cell was placed in a hypotonic environment meaning that the concentration of water was higher outside the cell membrane than inside so water entered the cell.