Enzymes and Kinetics – Section 1

26. A noncompetitive inhibitor of an enzyme-catalyzed reaction

A. increases K_M and increases V_max
B. increases K_M and reduces V_max
C. reduces K_M and increases V_max
D. reduces K_M and reduces V_max

27. An allosteric inhibitor of an enzyme usually

A. participates in feedback regulation
B. denatures the enzyme
C. is a hydrophobic compound
D. causes the enzyme to work faster

28. Which of the following activity is possible by transferases?

A. Transfer of methyl groups
B. Transfer of glycosyl group
C. Both (a) and (b)
D. None of these

29. A classical uncompetitive inhibitor is a compound that binds

A. reversibly to the enzyme-substrate complex yielding an inactive ESI complex
B. irreversibly to the enzyme-substrate complex yielding an inactive ESI complex
C. reversibly to the enzyme-substrate complex yielding an active ESI complex
D. irreversibly to the enzyme-substrate complex yielding an active ESI complex

30. Which graphical method is used to determine an enzyme degree of cooperativity?

A. Hill plot
B. Koshland curve
C. Michaelis-Menten hyperbola
D. Can not be determined