Bio 102 lec

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Author:
yourmomhaslice
ID:
194597
Filename:
Bio 102 lec
Updated:
2013-01-22 23:09:55
Tags:
bio lecture quiz1
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Description:
lecture one of biography. Quiz 1 material. The chemistry of life
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  1. What element do all important molecules contain?
    Carbon
  2. Element
    Fundamental form of matter
  3. Atom
    Contains protons (+) Neutrons (uncharged) and electrons (-)
  4. Molecule
    2 or more atoms held together by a chemical bond
  5. Types of Chemical Bonds
    • Covalent - strong bond
    • Ionic - weak bond

    Hydrogen - weak bond
  6. Charges for molecules
    Nonpolar - No charge

    Polar - Partial charges (+ or -)

    Charged - cation (+) or anion (-)
  7. Properties of water
    • Polar
    • Readily forms hydrogen bonds
    • Excellent solvent. Dissolves both charged and polar molecules
  8. hydrophobic
    does not like water. example: oil
  9. hydrophilic
    likes water or molecules will dissolve in water ( salt)
  10. Importance of Carbon
    • Readily forms a variety of covalent ( strong ) bonds.
    • Attaches to a variety of side groups

    forms framework of all organic molecules

    basis for biological macromolecules

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