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Exploring Living Things: Biology Discoveries and Methods

Delve into the fascinating world of biology, from genetic analysis to cancer drugs, and learn about the scientific methods and nature of biology. Understand how living things adapt, grow, and react to their environment.

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Exploring Living Things: Biology Discoveries and Methods

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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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