CH 1 The Science of Biology

Science is best described as…

• A way of explaining the natural world

• A collection of opinions

• A list of unchanging facts

• Guessing about events

The steps of scientific methodology include all of the following EXCEPT…

• Observing

• Hypothesizing

• Experimenting

• Accepting opinions

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In an experiment, the variable that is deliberately changed is called the…

• Dependent variable

• Independent variable

• Controlled variable

• Control group

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The factor that is observed and measured in an experiment is the…

• Independent variable

• Dependent variable

• Control

• Hypothesis

True or False: A hypothesis is just a random guess.

Why is peer review important in science?

• It prevents mistakes and bias

• It makes science more entertaining

• It ensures scientists get paid

• It replaces experimentation

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A well-tested explanation that unifies a broad range of observations is a…

• Law

• Theory

• Hypothesis

• Fact

True or False: In science, a theory is the same as an everyday guess.

All living things are composed of…

• Atoms

• Molecules

• Cells

• Tissues

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The molecule that carries universal genetic information is…

• Protein

• DNA

• RNA

• Lipids

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