| A | B |
|---|
| cell | A membrane covered structure that contains all the materials necessary for life. |
| consumer | An organism that eats producers or other organisms for energy |
| ATP | A molecule that provides energy for a cell’s activities |
| DNA | Heredity material that controls all the activities of a cell, contains the information to make new cells, and provides instructions for making proteins |
| stimulus | A change in an organism’s environment that affects the activity of the organism |
| metabolism | The total of all the chemical activities a cell performs. These activities include making food, breaking down food, moving materials into and our of the cell |
| heredity | The transmission of characteristics from one generation to the next |
| asexual reproduction | Reproduction with only one parent. The offspring are identical to the parent. |
| sexual reproduction | Reproduction requiring 2 parents. Offspring have characteristics of both parents. |
| nucleic acid | Compounds made of subunits called nucleotides. They contain the recipe for making proteins. DNA is one of these. |
| phospholipid | This forms the cell’s membranes. They are in 2 layers with the “tail” of the molecule facing in |
| lipid | Compounds that cannot mix with water. Some provide energy. A special kind of these form the cell membrane |
| carbohydrates | A group of compounds made of sugars. They are used for energy by cells. They may be simple (made of just a one sugar molecule) or complex (made of several sugar molecules linked together). |
| proteins | Almost all life processes involve this. They are large molecules made of subunits called amino acids |
| homeostasis | The maintenance of a stable internal environment |
| producers | Organisms that make or produce their own food |
| decomposers | Organisms that get their food by breaking down nutrients in dead organism or animal waste. |
