• Topic 1 Practice Review

    The questions in this review refer to topic 1: Biochemistry and the Molecules of Life

     

    Water is a _____ molecule, which lends it to many important properties.


    polar

    nonpolar

    ionic

    metallic

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


    nonpolar; polar

    polar; nonpolar

    organic; inorganic

    inorganic; organic

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


    metallic

    hydrogen

    ionic

    covalent

    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?


    Carbohydrate

    Lipid

    Nucleic acid

    Protein

    A monomer is to a polymer as...?


    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

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


    amine group

    carboxyl group

    phosphate group

    radical (r) group

    The "lock and key" model refers to


    dehydration synthesis

    monomers and polymers

    an enzyme and a substrate

    Hydrolysis involves the _____ of water to _____ a polymer.


    removal; break up

    removal; build

    addition; break up

    addition; build DNA

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


    monolipid

    monosaccharide

    polysaccharide

    amino acid

    Biological protein catalysts speed up reactions by


     lowering activation energy

     increasing the reaction temperature

     decreasing the amount of reactant collisions

      all of the above