Biology 101

  1. biology
    the study of life
  2. Characteristics of living things
    • 1) made of cells
    • 2.) grow,develop, and die
    • 3.) reproduce, and pass on their organization(cells, DNA)
    • 4)take in chemicals and energy from the environment
    • 5)evolve
    • 6)respond to stimuli
    • 7)homeostasis
    • 8)members of an ecosystem
  3. homeostasis
    tendancy of a system to maintain a set point even though there is caration around that set point
  4. ecosystem
    collection of interacting living and nonliving things in an area
  5. inductive reasoning
    specific to general
  6. deductive reasoning
  7. control group
  8. experimental group
    change in variable
  9. good hypothesis
    • simple, testable,
    • controls
    • sampling
    • models
    • humans(informed consent)
    • falsifiable
    • repeatable
    • publish
  10. theory
    • hypothesis that has not been disproven
    • very broad, explain many phenomena
  11. deontological ethic
    right or wrongness of an act, not about consequnces of the act
  12. utilitarian ethic
    acts are judged right or wrong based on the consequences of the act
  13. atom
    fundamental particle of nature
  14. nucleus
    central part of atom contains:protons and neutrons
  15. protons
    positive charge
  16. neutrons
    neutral no charge
  17. electrons
    negatively charges
  18. octet rule
    atoms react with each other in order to achieve a full outer shell
  19. ion
    atom that carries a charge because it has an unequal number of protons and electrons
  20. ionic bond
    strong mutual attraction of two oppositely charged ions (medium strength)
  21. molecule
    group of two or more atoms joined by chemical bonds
  22. compound
    type of molecule that contains different atoms
  23. covalent bonds
    2 atoms share a pair of electrons H2 o2
  24. polor
    ends are not the same (small charges)
  25. hydrogen bond
    very weak, due to the attraction between polor molecules
  26. solute
    a sissoluted substance
  27. solvent
    liquid that the substance dissolves in (h2o)
  28. cohesion
    • molecules resist separating due to H bonds
    • surface tension
  29. ph scale
    level of H+ in solution
  30. buffers
    sets of chemicals that help the pH of a solution constant (blood)
  31. Bicarbonate buffer system
    • co2 froms carbonic acid in water
    • bicarbonate buffer system
  32. organic molecule
    • lots of Carbon
    • monomer(single building block) polymer(chain)
  33. hydrolysis
    adding water
  34. 4 major types of biologically important organic molecules
    • 1)protein(metabolism)-form structures and enzymes
    • 2)carbohydrates-energy source
    • 3)lipids- long term energy storage-hormones
    • 4)nucleic acids-information storage
Card Set
Biology 101
Chapter one (quiz)