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58) Which of the following statements about allosteric control of enzymatic activity is true? a) Allosteric proteins are generally composed of several subunits. b) Binding of the effector changes the conformation of the enzyme molecule. c) Allosteric effectors give rise to sigmoidal Vo versus [S] kinetic plots. d) All of the answers. e) An effector may either Inhibit or activate an enzyme.

51) Which of the following is not an advantage of enzymes in organic solvents? a) Elimination of microbial contamination b) Changes in the enantioselectivity of the reaction c) Reversal of thermodynamic equilibrium in favor of synthesis over hydrolysis, allowing reactions not favored in aqueous solutions to occur (e.g. transesterification) d) All answers are advantages of enzymes in organic solvents