abBio Lab quiz

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abBio Lab quiz
2012-03-28 21:31:38

bio lab quiz
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  1. The Role of Science:
    • Gaining knowledge about our world and how it changes.
    • -changes in the world and changes in science
    • -science is a process that changes our understanding of the world.
    • -science involves technology and technology evolves
  2. Scientific method:
    • observation
    • question
    • hypothesis (es)
    • predictions
    • experiment
    • analysis
    • modify and or develop new hypothesis
  3. Observation:
    examining something such as a behavior or a phenomenon (an observed pattern)
  4. Question:
    Form a question about what you observed.
  5. Hypothesis:
    A possible or tentative answer to your question (why?)
  6. Prediction:
    If/then statements (if the hypothesis is true then you observe your predictiona)
  7. Experiment:
    Design an experiment that will TEST your predictions.
  8. Analysis:
    look at data from experiment
  9. Population biology:
    • •Population:
    • A group of organisms of the same species that interbreed and live in the same place at the same time .

    • •Thomas Malthus -1798 British Economist
    • Observed populations do not grow indefinitely or unchecked.
    • Limiting factors:
    • –Food, space, disease, predation, climate,
    • human factors, etc.
  10. Exponential growth:
  11. Logistic growth:
  12. Model organism - flour beetle
    • •Flour beetle (Tribolium confusum)
    • –Small size
    • –Quick reproductive time (~100 days)
    • –Analyze life stages
    • •Eggs hatch in 5-12 days
    • •Larval stage lasts for 22-100 days
    • •Pupal stage lasts ~ 8 days
    • •Reach adulthood in 7-12 weeks
    • –Life expectancy ~ 200 days
  13. Populatin experiment:
    • Observation: population growth is limited
    • Question: what limits population growth
    • Hypotheses: RH1: Food is limiting factor for pop. growth.
    • RH2: Space is a limiting factor for pop. growth.
    • Predictions: P1: if amount of food is limited, then population growth will be limited.
    • P2: if amount of space is limited, then population growth will be limited.
  14. Experiment design:
    • Volume of food (95% flour/5% brewer's yeast) and space (flour/yeast and vermiculite) expressed in cc.
  15. Sections of the scientific paper:
    • Abstract
    • Introduction
    • Materials and Methods
    • Results
    • Discussion
    • Literature Cited
  16. Abstract:
    short section (one paragraph) summarize
  17. Introduction:
    • Foundation
    • a) give conceptual basis (motivation for study)
    • b) bring non-specialists knowledge up to a point
  18. Material and Methods:
    Explain what was done and how it was done.
  19. Results:
    Describe the observed results. (no discussion)
  20. Discussion:
    • a) evaluates the results
    • b) puts results in context of previous work.
    • c) limitations
    • d) next step
    • e) significance of study
  21. Literature cited:
    cite works used in paper