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1103-Lecture 1-scientific method

1103-Lecture 1-scientific method - Lecture 1 Scientific...

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Unformatted text preview: Lecture 1 Scientific method Spontaneous generation • Observation • 1) Nile river floods every spring, producing muddy banks-> muddy banks->boom in frog population • 2) In Europe, • Conclusion • 1) frogs come from mud. • 2) rats come from Spontaneous generation • Life developes from non-living sources Do maggots come from rotten meat? • Prior to 1668 • People thought flies develop spontaneously thru “Spontaneous Generation” • Francesco Redi thought flies come Redi’s Idea • Maggots come from flies Prediction • If maggots come from flies then the meat that is exposed to flies will then develop maggots. • If maggots “spontaneously generate” then , maggots will develop in a closed air environment. Redi’s Experiment Conclusion • Yes, maggots come from flies! New Theory • Life comes from Life! • Life does NoT Spontaneously generate. Scientific Method 1) Observation 2) Hypothesis 3) Prediction 4) Experiment 5) Conclusion 6) Reproducibility 7) Theory Parts of an experiment • Observation- • Hypothesis- that the fungus is producing something that is inhibiting growth • Experiment- Designed the experiment • Controls- positive and negative • Replication- Ran experiment several times • Theory- conclusion Hypothesis • An Educated Guess • Hypothesis: Maggots come from flies (not spontaneous generation). Prediction...
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1103-Lecture 1-scientific method - Lecture 1 Scientific...

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