| A | B |
|---|
| hypothesis | possible explanation for a set of observations or answer to a scientific question |
| controlled experiment | test of the effect of a single variable by changing it while keeping other variables the same |
| controlled variable | factor in an experiment that stays the same |
| manipulated/independent variable | factor in an experiment that is purposely changed |
| responding/dependent variable | factor in an experiment that can change as a result of the independent variable |
| theory | well-tested explanation that unifies a broad range of observations |
| meter | basic unit for measuring length |
| gram | basic unit for measuring mass |
| liter | basic unit for measuring volume |
| Celsius | basic unit for measuring temperature |
| metabolism | chemical reactions through which an organism builds up or breaks down materials |
| homeostasis | maintaining a stable internal environment |
| unicellular | made up on only one cell |
| multicellular | made up of more than one cell |
| evolve | change over time |
| asexual reproduction | a single parent produces offspring identical to itself |
| sexual reproduction | cells from two different parents unite to form a new organism |
| stimulus | signal to which an organism responds |
| growth | getting bigger |
| development | cells differentiate to perform different functions |
