• Topic 1 Keystone Quiz

    The questions in this quiz refer to topic 1: Biochemistry and the Molecules of Life
    1. Water is a _____ molecule, which lends it to many important properties.

    2. polar
      nonpolar
      ionic
      metallic

    3. Compounds like H2O and CO2 would be ______, which compounds like C6H12O6 and C2H5O2N would be _____.

    4. nonpolar; polar
      polar; nonpolar
      organic; inorganic
      inorganic; organic

    5. Due to maximizing the number of _____ bonds, solid water is actually less dense than liquid water

    6. metallic
      hydrogen
      ionic
      covalent

    7. A macromolecule contains the elements C,H, and O. It is a polymer of hexagonal rings, and the elements come out to a ratio of ~1:2:1. Which macromolecule would this be?

    8. Carbohydrate
      Lipid
      Nucleic acid
      Protein

    9. A monomer is to a polymer as...?

    10. a polysaccharide is to a monosaccharide
      a nucleotide is to nucleic acid
      a lipid is to a carbohydrate
      a protein is to an amino acid

    11. Which of the following is not a part of an amino acid?

    12. amine group
      carboxyl group
      phosphate group
      radical (r) group

    13. The "lock and key" model refers to

    14. dehydration synthesis
      monomers and polymers
      an enzyme and a substrate

    15. Hydrolysis involves the _____ of water to _____ a polymer.

    16. removal; break up
      removal; build
      addition; break up
      addition; build DNA

    17. Glucose, a carbohydrate monomer, would be referred to as a(n)

    18. monolipid
      monosaccharide
      polysaccharide
      amino acid

    19. Biological protein catalysts speed up reactions by

    20. lowering activation energy
      increasing the reaction temperature
      decreasing the amount of reactant collisions
      all of the above