Answer Happy

7. Penicillin is an example of what kind of inhibitor? A. Reversible competitive B. Reversible uncompetitive C. Reversible mixed D. Irreversible 8. What do enzymes do? A. Enzymes increase the rate of a reaction, but do not affect the equilibrium constant for the reaction. B. Enzymes increase the rate and the equilibrium constant for a reaction. C. Enzymes do not affect the rate of a reaction, but shift the equilibrium in favor of product formation. D. What gets affected depends on the enzyme. 9. Several mutant forms of a protein were identified, in which a Ser residue was substituted for a different amino acid. Which of the following substitutions is the least likely to disrupt protein structure/function? A. Tyr B. Thr C. Ala D. Asn E. Asp 10. Which of the following statements regarding kcat are false? A. kcat is the turnover number of the enzyme B. kcat is a maximal rate corrected for [E] C. kcat is a second order rate constant D. kcat describes the number of molecules of substrate that can be converted to product per unit time