| A | B |
|---|
| cell | a membrane covered structure that contains all of the materials necessary for life |
| stimulus | anything that affects the activity of an organism, organ, or tissue |
| homeostatsis | the maintenance of a stable internal environment |
| asexual reproduction | reproduction in which a single parent produces offspring that are genetically identical to the parent |
| sexual reproduction | reproduction in which two sex cells join to form a zygote; sexual reproduction produces offspring that share characterisitics of both parents |
| DNA | deoxyribonucleic acid; hereditary material that controls all of the activities of the cell, contains information to make new cells, and provides instructions for making proteins |
| heredity | the passing of traits from parent to offspring |
| metabolism | the combined chemical processes that occur in a cell or living organism |
