• Topic 1 Practice Review

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

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

        polar

        nonpolar

        ionic

        metallic


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

        nonpolar; polar

        polar; nonpolar

        organic; inorganic

        inorganic; organic


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

        metallic

        hydrogen

        ionic

        covalent


      1. 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


      1. 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


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

        amine group

        carboxyl group

        phosphate group

        radical (r) group


      1. The "lock and key" model refers to

        dehydration synthesis

        monomers and polymers

        an enzyme and a substrate


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

        removal; break up

        removal; build

        addition; break up

        addition; build DNA


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

        monolipid

        monosaccharide

        polysaccharide

        amino acid


      1. Biological protein catalysts speed up reactions by

        lowering activation energy

        increasing the reaction temperature

        decreasing the amount of reactant collisions

        all of the above