Cell Membrane - A semipermeable barrier that separates the interior of a cell from the external environment.⏎
Cancer - A class of diseases in which abnormal cells divide without control and are able to invade healthy tissues in various parts of the body.⏎
Adaptive Mutation - A mechanism through which certain cells can increase the rate in which genetic mutations occur, often in response to stress. This mechanism may help explain how bacteria develop resistance to certain antibiotics.⏎
Cell - The smallest unit of living matter capable of functioning independently.⏎
Autoimmune Disease - An umbrella term for a range of conditions in which the immune system mistakenly attacks healthy tissue in the body.⏎