Lect 1 scientific-method-bsc-1010_f13_jc
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The document provides an overview of the scientific method and examples of its application to understanding life and climate change. It discusses the key characteristics of life, levels of biological organization from atoms to cells to organisms, and an outline of the history of life on Earth. Examples of applying the scientific method include using observations, hypotheses, predictions and experiments to investigate evolution and determine whether climate change is occurring.
![Interactive question #3
“Temperature rise in the
20th
century was caused
by increased [CO2]” is an
example of a(n)
A.observation
B.hypothesis
C.model
D.correlation
E.experimental result](https://image.slidesharecdn.com/lect-1scientific-methodbsc-1010f13jc-130904120552-/85/Lect-1-scientific-method-bsc-1010_f13_jc-39-320.jpg)
Lect 1 scientific-method-bsc-1010_f13_jc
- 1. Scientific method Lecture #1, Chapter 1 by John Cozza, Biology Dept. (some material modified from Raven, Biology 9th ed.)
- 2. Energize your clicker! • Register your clicker online at http://www1.iclicker.com/register-an-iclicker using your Panther ID! • Press and hold power button for 2 sec. • Enter frequency “AA” ( or ●) • Answer questions. • or ● means OK. • No or ● or means not OK. • Please help your neighbor!
- 3. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 4. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 5. Goals of General Biology 1 Describe & discuss •Cell components and how they function •Inheritance on the molecular, organismal, and population levels •Mechanisms of and evidence for evolution •Relevant applications
- 6. Study plan 1) Read relevant chapter(s) – Summaries, figures – Review questions 1) Participate in lecture – Interaction – Notes 1) Review lecture ASAP – Book – Study group 1) Ask Qs & use office hours
- 7. Integrate! • Lecture • Book • Lab • PLTL • Experiences & resources
- 8. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 9. Think—pair—share: What is life? NASA Curiosity rover on Mars
- 10. What is life? • Movement • Organization • Compartmentalization • Growth & reproduction • Heredity • Evolution • Metabolism • Interact with environment • Homeostasis • Entropy? • Emergent properties http://environment.nationalgeographic.com/en vironment/natural-disasters/hurricane-profile/ http://www.erh.noaa.gov/okx/okxfirewx.html
- 11. Define life? Life is a “self-sustaining chemical system capable of Darwinian evolution.” - G.F. Joyce, adopted as the NASA definition Bains, W. 2004. Many chemistries could be used to build living systems. Astrobiology
- 12. Think—pair—share: Evidence for life on Earth? NASA Galileo spacecraft http://solarsystem.nasa.gov/multimedia/ display.cfm?IM_ID=462 Earth from Galileo spacecraft. Closest approach 960 Km
- 13. Evidence for life on Earth? • Abundant H2O • Abundant O2 • Disequilibrium of CH4 • Absorption of red; reflectance of green • Radio wave emissions Earth from Galileo spacecraft Sagan, C. et al. 1993. A search for life on Earth from the Galileo spacecraft. Nature 365: 715-721
- 14. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 15. Atoms to cell
- 17. Cell to organism
- 19. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 20. Key questions • How did life begin? • What were the major innovations? • Which were likely vs. unlikely? Archean eon By Martin Schuler
- 23. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 24. “Popperian” scientific method observations question hypotheses predictions experiments hypotheses supported or rejected Karl Popper 1902-1994 http://en.wikipedia.or g/wiki/Karl_Popper
- 26. “Popperian” scientific method observations question hypotheses predictions experiments hypotheses supported or rejected
- 27. Science has many methods! observations question hypotheses predictions experiments hypotheses supported or rejected correlations model description theory -big picture -diverse support
- 28. Interactive question #1 A researcher is investigating the effect of moderate wine consumption on cardiovascular health. An example of a prediction associated with the study would be A.Red wine is an antioxidant. B.Red wine is popular in Italy, which has a lower rate of heart attacks than the US. C.Red wine slows atherosclerosis. D.Red wine drinkers will have fewer heart attacks than non-drinkers.
- 30. Science is a social process! http://mistypedurl.com/2009/ 03/bachelors-of-science/
- 31. Peer review
- 32. Science of Biology outline • How to succeed • What is life? • Levels of organization • Brief history of life • Scientific method • Examples of inquiry – Evolution – Climate change
- 33. Climate change: is it real? http://www.skepticalscience.com/solar-activity-sunspots-global-warming-advanced.htm Data from tree rings, ice cores, sediments
- 34. Climate change: is it real? http://climate.nasa.gov/key_indicators
- 36. Interactive question #2 Rising global temperatures since the late 1800s is an example of a(n) A.observation B.hypothesis C.model D.correlation E.experimental result
- 39. Interactive question #3 “Temperature rise in the 20th century was caused by increased [CO2]” is an example of a(n) A.observation B.hypothesis C.model D.correlation E.experimental result
- 41. Interactive question #4 The relationship of CO2 to temperature since 1970 is an example of a(n) A.observation B.hypothesis C.model D.correlation E.experimental result
- 42. Sea level rise Projection of sea level rise from 1990 to 2100, based on three different emissions scenarios. Also shown: observations of annual global sea level rise over the past half century (red line), relative to 1990. http://www.epa.gov/climatechange/science/future.html
- 43. Interactive question #5 Scenarios for sea level rise by 2100 are an example of a(n) A.observation B.hypothesis C.model D.correlation E.experimental result
- 44. Science of Biology summary • How to succeed • What is life? – Characteristics – Levels of organization – History • Scientific method Next: • Biological molecules