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Lecture1 - BIOLOGY 1001 Wednesday Lecture 1 Principles...

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BIOLOGY 1001 Wednesday, January 16, 2008 Lecture 1 Principles Underlying All Science 1.) All events can be attributed to natural causes. Explanations: a. Do not invoke deity. b. Do not specifically exclude deity. 2.) Natural lies apply to all places and times. 3.) People perceive events in similar ways. The Scientific Method 1.) Observation – Something unexpected happens. 2.) Hypothesis – Explanation; if/then prediction. 3.) Experiment – Controlled test; challenge prediction. 4.) Conclusion – Supports or doesn’t support hypothesis. *If it doesn’t support the hypothesis, then you need to modify. *Example of the scientific method is on page 10 of the book. Penicillin Fleming discovered anti-biotic in 1920 when a culture dish became contaminated. Observation: Bacteria wouldn’t grow near the mold. Hypothesis: Something in the mold is preventing bacterial growth. Experiment: Extracted fluid from mold. Conclusion: Fluid inhibited bacterial growth.
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