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How Do We Know What We Know?

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admin 发表于 2018-8-1 00:27:18 | 只看该作者 |阅读模式 打印 上一主题 下一主题
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How Do We Know What We Know?

■■ Science is not a collection of facts but a process of discovering
answers to questions about our natural world. Scientists
gain knowledge by using the scientific method, which involvescreating
a hypothesis that can be tested for validity by collecting
data through well-designed, controlled experiments.
■■ A well-designed experiment will vary only one condition at a
time to test a hypothesis. This test can involve the use of mutants,
experiments in which one component at a time is changed, and
the use of inhibitors of specific cellular processes.
■■ Progress in science is based on the consistency and reproducibility
of experimental results. These results are often presented in
the form of peer-reviewed journal articles.
■■ Scientists use a variety of well-studied cell cultures and model
organisms to test new hypotheses, develop new theories, and
advance our knowledge of cell biology.

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