Chapter 1: The Science of Biology - The Scientific Method

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What is a hypothesis?

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A hypothesis is a scientific explanation for a set of observations that can be accepted or rejected.

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What do scientists base their explanations on?

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Scientists propose explanations that are based on evidence, not belief.

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What do conclusions contain regarding a hypothesis?

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Conclusions contain statements that either accept or reject the hypothesis.

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What is replication in an experiment?

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Replication is the number of times a treatment is repeated in an experiment.

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What is the experimental group in an experiment?

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The experimental group is the group that is given the independent variable, while all other conditions remain the same.

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What is the control group in an experiment?

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The control group is the group that does not receive the experimental treatment and is used for comparison.

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What is the independent variable?

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The independent variable is the factor that is manipulated or changed in an experiment.

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What is the dependent variable?

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The dependent variable is the factor that is measured or observed in response to changes in the independent variable.

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What are controlled variables?

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Controlled variables are factors that are kept constant throughout an experiment to ensure that the results are valid.

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What is the purpose of a scientific experiment?

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The purpose of a scientific experiment is to test a hypothesis by collecting data and analyzing the results.