| A | B |
|---|
| malignant | a tumor that invades and damages healthy tissue |
| benign | a mass of cells that does not harm healthy tissue |
| cell cycle | the normal sequence of events in a cell's life |
| mitosis | cell division creating two identical cells |
| tumor | a mass of abnormal cells |
| metastasis | tumor cells breaking free and moving to another site |
| interphase | cell cycle phase in which the cell is doing its normal job |
| cytokinesis | the division of cytoplasm after mitosis |
| chromosome | a strand of DNA coiled around proteins |
| chromatid | a uncopied strand of DNA |
| mutation | any change in the DNA sequence |
| carcinogen | environmental factors that cause cancer |
| differentiation | a cell changes to perform a particular function |
| heredity | characteristics that are passed on to a new generation through genes |
| oncogene | a cancer causing gene |
| tumor suppressor gene | a gene that regulates the cell cycle |
