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Ch 1.1 What is Biology

Ch 1.1 What is Biology. Things a biologist might study- . “Genetic Analysis Finds Greater Threat In Frog-killing Fungus” Source: University of California – Berkeley Date: August 11, 2007. “ First Detailed View Of Molecular Structure May Usher In New Class

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Ch 1.1 What is Biology

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  1. Ch 1.1 What is Biology • Things a biologist might study- “Genetic Analysis Finds Greater Threat In Frog-killing Fungus” Source:University of California – BerkeleyDate:August 11, 2007 “First Detailed View Of Molecular Structure May Usher In New Class Of Cancer Drugs” Source:Yale UniversityDate:August 8, 2007 “Anthrax Bacterium's Deadly Secrets Probed” Source: Research Councils UKDate:August 9, 2007

  2. Can sense its environment. • Can manipulate things in its environment. • Has some degree of intelligence, or ability to make choices based on the environment, or automatic control. • Can move with one or more axes of rotation. • Can make coordinated movements.

  3. Ch 1.1 What is Biology • Characteristics of Living Things • Organization • Reproduction • Growth and development • Adjust to surroundings • Homeostasis • Adapt www.hps.com/.../madikwe/giraffe/giraffe1.jpg

  4. Scientific methods Observations Identify a problem Research Hypothesize Experiment Collect Data Analyze data Hypothesis supported?? Peer Review/Publish Verification Ch 1.2 Methods of Biology

  5. www.sciencebuddies.org/mentoring/overview_sci...

  6. Identify a problem… • What causes __________?Why do Mexican poppies flower in the spring? (Their favorite time of year?) Turns into: What causes Mexican poppies to flower in the spring? • Which ____ is best for _____? Why do plants use nitrogen? (Very tough question!)Turns into: Which amount of nitrogen is best for plant growth? • Is it true that______ ?Why did I find isopods in dark places? (Who really knows?)Turns into: Is it true that isopods prefer to be in dark places? Which _____ is/does _____ ?Why do animals visit desert marigold flowers? (For the bouquet?)Turns into: Which animal visits the desert marigold flowers the most?Why do hummingbirds eat flower nectar?Turns into: Which sugar concentration do hummingbirds prefer?

  7. 1.2 The Methods of Biology • Hypothesis must be an if...then statement. • “Ultra violet light may cause skin cancer. “ • “If skin cancer is related to ultraviolet light , then people with a high exposure to UV light will have a higher frequency of skin cancer.” • Experiment • Control • Independent variable • Dependent variable • Test only one variable at a time!

  8. 1.2 The Methods of Biology • Data • Quantitative • Qualitative • Theory vs. Law

  9. 1.3 The Nature of Biology • Graphing • Must always have • Title • Independent variable on X-axis • Dependent variable on Y-axis • Lables • Line • Bar • Circle/Pie

  10. nces.ed.gov/.../user_guide/graph/images/line.jpg

  11. nces.ed.gov/.../user_guide/graph/images/line.jpg

  12. nces.ed.gov/.../user_guide/graph/images/line.jpg

  13. Table 5.  SI prefixes Table 5.  SI prefixes 1.3 The Nature of Biology • SI Units (International System of Units) • Length • Time • Mass • Volume • Temperature

  14. 1.3 The Nature of Biology • Science = knowledge • Technology = practical uses of science • Ethics = What to do the technology Dolly and Bonnie http://en.wikipedia.org/wiki/Dolly_the_sheep

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