Biology ch 1-3

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Author:
kmccan4
ID:
35344
Filename:
Biology ch 1-3
Updated:
2010-09-17 11:54:51
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biol
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Test 1
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  1. A fundamental characteric of life on earth is that...
    living things grow and reproduce
  2. Homestasis is the process by which...
    ...living thins maintain their complex structure and the internal conditions needed to sustain life.
  3. What groups contain prokaryotic cells?
    Bacteria and Archaea
  4. Science assumes that naturla laws (such as the law of gravity)...
    ...apply uniformly through space and through time.
  5. The complexity and organization characteristic of living organisms depends on the periodic capture of raw materials and energy. Ultimately, the osurce of these materials and energy is...
    ...the sun.
  6. The basic structural units of chemistry and life are..
    ...atoms.
  7. Ions are atoms that have...
    ....gained or lost an electron.
  8. Ionic bonds form btwn atoms that have...
    ...nearly empty and nearly full outermost electron shells.
  9. What allows one atom to physically interact with a second atom?
    properties of the electrons.
  10. Functional groups are...
    ...groups of atoms in organic molecules that can participate in certain types of chemical reactions.
  11. The general class of biological molecules that contains large, nonpolar regions that make these molecules insoluble in water is called...
    ...lipids.
  12. Saturated fats...
    ...no double bonds, solid at room temp., and contain the max # of H atoms possible.
  13. Phospholipids contain a "head group" that is ...and two fatty acid "tails" that are...
    hydrophilic, hydrophobic
  14. Proteins are polymers of...
    ...amino acids.
  15. Protein functions in cells include...
    ...stroage and defense, catalysis of biochemical reactions, structure and movement, & transport and defense.
  16. A nucleotide is composed of...
    ...a sugar, a phosphate group, and a nitrogen-containing base.
  17. A cell membrane is primarily composed of...
    ...phospholipids.
  18. The quaternary level of protein structure...
    ...refers to a functional complex of 2 or more 3-dimensional proteins.
  19. Nucletides...
    ...are found in nucleic acids, intracellular messenger molecules, and high-energy molecules.
  20. Bacteria...
    Prokaryotic, Unicellular, Auto or Hetero
  21. Archaea...
    ...Prokaryotic, Unicellular, Auto or Hetero.
  22. Fungi...
    ...Eukaryotic, Multicellular, Heterotrophic.
  23. Plantae...
    ...Eukaryotic, Multicellular, Autotrophic.
  24. Animalia...
    Eukaryotic, Multicellular, Heterotrophic.
  25. Protists...
    Eukaryotic, Uni- and Multicellular, Auto and Hetero.
  26. Scientific Method...
    ...Observation, Question, Hypothesis, Prediction, Experiment, Conclusion.
  27. Inductive reasoning...
    ...a generalization is created from many obervations.
  28. Deductive reasoning...
    ...the process of generating hypotheses based on a well-supported generalization(such as a theory).
  29. ...consist 2 or more atoms from the same or diff elements
    molecules...
  30. A molecule in which atoms have 1 or more unpaired electrons in their outer shells...
    free radical.
  31. Process by which new chemical bounds are formed or existing bounds are broken, converting one substance into another is a...
    ...chemical reaction.
  32. Ionic bond...
    ...an electron is transferred, creating (+) and (-) ions that attract one another.
  33. Covalent bond...
    ...electrons are shared.
  34. In molecules like H2, both atoms exert the same pulling force and the bond is called a...(equal sharing)
    ...non-polar covalent bond.
  35. In molecules where atoms of different elements are involved (h2o), the electrons ar not always equally shared and these covalent bonds are called...
    ...polar covalent bonds.
  36. An atom w/ a partically full outermost electron shell become stable by sharing electrons w/ another atom, forming a...
    ...covalent bond.
  37. Hydrogen bond...
    ...occurs btwn water molecules, form when partial opposite charges in diff molecules attract each other, only occur btwn oxygen, nitrogen, fluorine.
  38. Cohesion...
    ...is the tendency of molecules of a substance to stick 2gthr.
  39. Cohesion of water molecules along a surface produces...
    ...surfaces tension.
  40. The "clumping" of non-polar molecules is...
    ...hydrophobic interaction.
  41. The amount of heat needed to cause a substance such as water to evaporate (to change from a liquid to a vapor)...
    ...heat of vaporization.
  42. Sucrose (table sugar) =
    glucose + fructose
  43. Lactose (milk sugar) =
    glucose + galactose
  44. Maltose =
    glucose + glucose

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