lect1_2_-_intro_chem_of_life

lect1_2_-_intro_chem_of_life - I. BIOLOGY = the study of...

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I. BIOLOGY = the study of LIFE A. What is Life? What are the characteristics of life? All life:
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B. How do we study life Science attempts to explain observed trends -development of testable hypotheses -conclusions subject to modification with new data Observation: Cells exist Question: Where might cells come from? Hypothesis: Cells arise from pre-existing, live cells (H = a proposed explanation) Observation Question Hypothesis 1 Hypothesis 2 Empirical tests Conclusions Publications
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B. How do we study life Observation: Cells exist Question: Where might cells come from? Hypothesis: Cells arise from pre-existing, live cells Make testable predictions , devise ‘if, then’ statements: If the number of cells increases in a solution of live cells, but not in a sterilized solution, then cells must arise from pre-existing live cells Empirical tests: Test the prediction (and hypothesis); collect data
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Cell theory
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B. BIOLOGY = the study of LIFE Observation: Cells exist Question: Where might cells come from? Hypothesis: Cells arise from pre-existing, live cells make predictions Empirical tests: Test the prediction; data are collected Make conclusions: Analyze data, form conclusions based on data Share findings! Then ask more questions…. Observation Question Hypothesis 1 Hypothesis 2 Empirical tests Conclusions Publications
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C. Thinking like a scientist Science = development of testable hypotheses; conclusions subject to modification with new data Biology searches for ideas that explain
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lect1_2_-_intro_chem_of_life - I. BIOLOGY = the study of...

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