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Unit 2: The Chemistry of Life

  •  English    34     Public
    Chemistry, Properties of Water, Macromolecules & Enzymes
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  • Hemoglobin is an example of a _______________.
    protein
  •  15
  • A(n) _______________ is a substance that speeds up the rate of a reaction.
    polymer
    catalyst
    amino acid
    monosaccharide
  •  15
  • A type of bond between atoms in which electrons are shared.
    Covalent Bond
    Metallic Bond
    none of these
    Ionic Bond
  •  15
  • Energy input that is needed for a reaction to begin is called _____________________.
    activation energy
  •  15
  • Chemical bond formed when electrons are transferred from one atom to another
    ionic bond
  •  15
  • A weak attraction between a hydrogen atom and another atom is called a _______________.
    Hydrogen Bond
  •  15
  • A protein catalyst that speeds up the rate of specific biological reactions is called a(n) __________________.
    enzyme
  •  15
  • A measurement of how difficult it is to stretch or break the top layer of a liquid.
    Surface Tension
  •  15
  • Atomic number is equal to ______________________
    the number of protons
  •  20
  • elements or compounds that participate in a chemical reaction
    reactant
  •  15
  • mixture of water with an non-dissolved material
    suspension
  •  15
  • small chemical unit that makes up a polymer
    monomer
  •  15
  • reactant of an enzyme-catalyzed reaction
    substrate
  •  15
  • Describe the significance of water having a high heat capacity
    allows for our bodies to avoid drastic changes in temperature and allows our bodies to cool off when sweating; ultimately allows our bodies to maintain homeosta
  •  25
  • Water "sticking" to other water molecules would be an example of ______________________.
    heat of vaporization
    cohesion
    adhesion
    capillary action
  •  10
  • Water sticking to its container would be an example of _____________.
    heat of vaporization
    heat capacity
    adhesion
    cohesion
  •  10