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CHAPTER   6   Chymotrypsin: A Model Enzyme
 
1.
A/An ________ is a noncovalently bound small organic molecule that is required for the catalytic activity of an enzyme.

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2.
A/An ________ is a compound containing an electron-rich group.

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3.
The bond that is cleaved during a hydrolytic reaction is the ________ bond.

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4.
An RNA molecule that has catalytic activity is a/an ________.

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5.
________ is the reverse of condensation.

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6.
A compound that bears a negative charge on a carbon atom is a/an ________.

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7.
Covalent catalysis is a catalytic mechanism in which the transient formation of a covalent bond between the catalyst and a reactant lowers the free energy of a reaction's ________.

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8.
________ is a technique for identifying functional groups in a macromolecule by treating the molecule with a reagent that reacts with those groups.

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9.
________ is the process of forming a blood clot.

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10.
Different proteins that catalyze the same reaction are called ________.

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11.
During the process of ________, it appears that the compound catalyzes its own activation because the product of the activation reaction also acts as a catalyst for the same reaction.

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12.
A Schiff base is an ________ that forms between an amine and an aldehyde or ketone.

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13.
The hydrogen bonded Ser, His, and Asp residues that participate in catalysis in serine proteases make up the ________.

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14.
________ is the ability of an enzyme to discriminate between possible substrates and to catalyze a single type of chemical reaction.

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15.
The region of an enzyme in which catalysis takes place is called the ________.

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16.
________ is a chronic disease characterized by difficulty breathing due to alveolar degeneration and loss of lung elasticity.

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17.
A/An ________ reacts readily with a nucleophile.

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18.
The independent development of similar characteristics in unrelated species is called ________.

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19.
_________ is a peptide-hydrolyzing enzyme that has a reactive Ser residue in its active site.

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20.
A substance that promotes a chemical reaction without undergoing permanent change is a/an ________.

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21.
The phenomenon in which an enzyme's conformation changes upon binding with a substrate is called ________.

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22.
A/An ________ is a short, strong hydrogen bond in which the proton is shared equally by the donor and acceptor atoms.

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23.
An affinity label is a labeled compound that resembles an enzyme's ___________ but reacts irreversibly with and thereby labels a group in the enzyme's active site.

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24.
________ is a catalytic mechanism in which sequestering the reacting groups away from the aqueous solvent lowers the free energy of a reaction's transition state.

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25.
Tautomers are isomers that differ only in the position of a/an ________ atoms.

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