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Water and Macromolecules Review (Nov 29-30)

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    Water and macromolecules
  •   Study   Slideshow
  • What type of bond connects atoms together in a single molecule of water?
    polar covalent
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  • What type of bonds connects atoms between different molecules of water?
    hydrogen
  •  15
  • Why does water have negative and positive "poles"?
    O is more electronegative; pulls e- more; O is more negative so H is more positive
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  • What types of substances dissolve well in water?
    polar and ionic
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  • Which class of biomolecules are generally hydrophobic?
    lipids
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  • Saturated fatty acids have ____ C-C bonds and pack together ____.
    single; tightly
  •  15
  • Unsaturated fatty acids have ____ C-C bonds and pack together ____.
    double; loosely
  •  15
  • Which property of water gives it surface tension so that water bugs can walk on its surface?
    cohesion
  •  15
  • Which two properties of water allow it to move up within the stem of a plant?
    adhesion and cohesion
  •  15
  • Which type of biomolecule is this?
    carbohydrate
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  • Name one function for this class of biomolecule.
    source of energy; cell structure
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  • What type of biomolecule is this?
    lipid (triglyceride)
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  • Name one function for this class of biomolecule.
    store of energy; insulation
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  • What type of biomolecule is this?
    lipid (phospholipid)
  •  15
  • What type of biomolecule is this?
    nucleic acid
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  • Name one function for this class of biomolecule.
    store / transmit / communicate genetic information
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