| A | B |
|---|
| scientific method | the approach scientists use to announce findings or propose new ideas |
| hypothesis | possible explanation for an observed set of facts. Stated in "if/then" terms |
| replicates | the ability to be repeated |
| constants | parts of the experiment that are kept the same |
| controlled experiments | two identical experiments set up to allow researchers to isolate and test the effects of a single variable |
| variable | a factor in a controlled experiment |
| control | the part of the experiment that serves as a reference |
| independent variables | factors that influence the dependent variable. The variable that is manipulated |
| dependent variable | the measured variable |
| data | scientific clues and observations |
| theory | explanation that applies to a broad range of phenomena and is supported by experimental evidence |
| scientific law | statement about a phenomenon that is always true; based on thousands of tests and/or observations. |
| organisms | living things |
| biology | study of life |
| gel electrophoresis | separates mixtures of large molecules according to size by using electric current |
| chromatography | separates pigments based on density |
