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Factor in an experiment that a scientist purposely changes; also known as independent variable
A subject or group of subjects in an experiment that is exposed to the factor or condition being tested.
6 characteristics of living things
chemicals of life,
response to surroundings,
growth and development,
A design in which researchers manipulate an independent variable and measure a dependent variable to determine a cause-and-effect relationship
A long, whip-like filament that helps in cell motility. Many bacteria are flagellated, and sperm are flagellated.
saclike organelles that expand to collect excess water and contract to squeeze the water out of the cell
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