Final answer:
Testing a hypothesis in biology is called an experiment, where various variables are manipulated to observe the effect on the outcome.
Step-by-step explanation:
Testing a hypothesis is called an experiment. In biology, experiments are conducted to test predictions or hypotheses and to gather data that can be used to support or reject these hypotheses. They involve manipulating variables and controlling other factors to observe the effect on the outcome. For example, if a hypothesis states that a certain drug will reduce the growth of cancer cells, an experiment can be designed to test this hypothesis by treating one group of cells with the drug and another group with a placebo.
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