| A | B |
| cells | The basic unit of structure and function in all living things |
| Theory | a well-substantiated explanation or a set of statements that have been confirmed over the course of many independent experiments. |
| what cells do | Cells carry out living functions, grow, and reproduce |
| Cell Theory | explanation describing cells, e.g. the cell as the basic unit of living organisms, all living things are made of cells, and that all cells arise only from pre-existing living cells |
| light microscope | An optical instrument with lenses that refract (bend) visible light to magnify images of specimens. |
| Part one of the Cell Theory | 1. All organisms are composed of one or more cells. |
| Part two of the Cell Theory | 2.The cells is the basic unit of life in all living things. |
| Part three of the Cell Theory | 3.The cells are produced by the division of preexisting cells. |
| How has the cell theory been used? | Cell Theory have been used for vaccines, disease, cure for cancer, cloning, health, and medical research. |
| Homeostasis | A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level |
| mitosis | cellular reproduction; cell division in which the nucleus divides into nuclei containing the same number of chromosomes |
| Reproduction | the process of producing offspring |
| electron microscope | uses electrons instead of light as a source of illumination |