| A | B |
|---|
| cell theory | A widely accepted explanation of the relationship between cells and living things. |
| cytoplasm | The region between the cell membrane and the nucleus; in organisms without a nucleus, the region located inside the cell membrane. |
| microscope | An instrument that makes small objects look larger. |
| nucleus | A cell structure that contains nucleic acids, the chemical instructions that direct all the cell’s activities. |
| organelle | A cell structure that carries out a specific function within the cell. |
| cell | The basic unit of structure and function in living things. |
| unicellular | Organism composed of a single cell |
| abiotic | Relating to non-living things |
| biotic | Relating to living things |
| multicellular | Organism that is composed of 2 or more cells |
| variable | any factor that can change during an experiment |
| metabolism | how an organism uses energy and gets rid of wastes |
| homeostasis | maintaining steady internal conditions, balance, stability |
| reproduce | when new individuals are made by parent organisms |
