11.  Enzymes that can function at boiling water temperatures or other harsh conditions would be termed  
A.  Denatured
B.  Ribozymes
C.  Abzymes
D.  Exoenzymes
E.  Extremozymes

12.  Ribozymes are  
A.  Ribosomes which catalyze reactions
B.  Unique to prokaryotes
C.  Unique to eukaryotes
D.  Catalysts for RNA splicing
E.  Catalysts for DNA splicing

13.  Enzymes that are only produced when substrate is present are termed  
A.  Exoenzymes
B.  Endoenzymes
C.  Constitutive enzymes
D.  Induced enzymes
E.  Conjugated enzymes

14.  Enzymes that catalyze removing electrons from one substrate and adding electrons to another are called  
A.  Phosphotransferases
B.  Oxidoreductases
C.  Decarboxylases
D.  Aminotransferases
E.  Ligases

15.  Enzymes that catalyze moving a phosphate from one substrate to another are called  
A.  Phosphotransferases
B.  Oxidoreductases
C.  Decarboxylases
D.  Aminotransferases
E.  Ligases

16.  Enzymes that catalyze removal of carbon dioxide from a substrate are called  
A.  Phosphotransferases
B.  Oxidoreductases
C.  Decarboxylases
D.  Aminotransferases
E.  Ligases

17.  The most likely place where an exoenzyme participates in a chemical reaction is  
A.  Mitochondria
B.  Within the cell membrane
C.  Lysosomes
D.  Cytoplasm
E.  Outside of the cell

18.  All of the following are exoenzymes except  
A.  ATP synthase
B.  Streptokinase
C.  Penicillinase
D.  Collagenase
E.  Elastase

19.  During aerobic cellular respiration, the final electron acceptor is  
A.  Pyruvic acid
B.  Oxygen
C.  Nitrate
D.  Cytochrome c
E.  FAD

20.  _____ reactions are anabolic reactions involving ligases for synthesis and the release of one water molecule for each bond formed.  
A.  Reduction
B.  Condensation
C.  Oxidation
D.  Transfer
E.  None of the choices are correct