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

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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

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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

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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

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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

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