BIOLOGY CH1

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Author:
Kane
ID:
306797
Filename:
BIOLOGY CH1
Updated:
2015-08-25 13:59:53
Tags:
biology
Folders:
biology
Description:
biology
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  1. levels of organization
    Cellular level - atoms, molecules, macromolecules, organelles, cells

    Organismal level - tissues, organs, organ system, organism

    Population level - population, species, community, ecosystem
  2. ecosystem
    All the living and nonliving components of a particular environment
  3. community
    all populations of different species that coexist and interact (in time and space)
  4. population
    all organisms of the same species that coexist and interact (in time and space)
  5. organism
    a living entity that can act or function independently
  6. organ system
    a group of interconnected organs that have a specific collective function
  7. organ
    a structure composed of two or more tissue types that work together to carry out a particular function
  8. tissue
    a distinct area of an organ formed from a mass of similar cells and cell products
  9. cell
    the smallest level at which all functions of life can be carried out by organisms
  10. organelle
    structures in cells that carry out distinct functions
  11. molecule (adenine)
    a particle composed of at least two bonded atoms that has a unique set of physical and chemical properties
  12. atom (hydrogen, carbon, nitrogen)
    the smallest unit of matter that retains the properties of an element
  13. characteristics of life
    • 1.- Cellular organization: All living organisms are composed of one or more cells.
    • 2.- Metabolism: All living organisms use energy.
    • 3.- Homeostasis: All living organisms maintain stable internal conditions.
    • 4.- Growth and Reproduction: All living organisms grow and reproduce.
    • 5.- Heredity: All living organisms use DNA to transmit hereditary information to offspring.
  14. evolution, evolve
    genetic change in a species over time
  15. natural selection
    the differential reproduction of genotypes caused by factors in the environment
  16. discovery science
    observes phenomena and draws conclusions from the observations (observe phenomena; classify)
  17. hypothesis-based science
    sets out to see how one factor affects other factors (manipulate one factor; observe the response)
  18. controlled experiment
    An experiment that isolates the effect of one variable on a system by holding constant all variables but the one under observation
  19. control group
    a group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group
  20. experimental group
    the group in an experiment that receives the variable being tested

    the experimental group is compared to a control group, which does not receive the test variable.
  21. scientific method
    • observation
    • question
    • hypothesis
    • experiment/investigations
    • analysis/data
    • conclusion
  22. observation
    what is going on
  23. question
    question raised based on the observation
  24. hypothesis
    a proposal that might be true (an educated guess)
  25. experiment
    test of a hypothesis
  26. results & conclusion
    results/conclusions based on the hypothesis
  27. scientific theory
    a well tested hypothesis supported by a great deal of evidence
  28. Describe 5 of the characteristics of life. Explain and give an example for each  of the characteristics.
  29. Describe 12 levels of biological organizations using specific examples and functions of those examples
  30. Compare and contrast discovery science and hypothesis-based science. Explain an example of each.
  31. What are the steps of the scientific method? Describe each step and what
    happens in them. Use an example to help explain the steps.

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