10. If the pH of 1 liter of a 1.0 M carbonate buffer is 7.0, what is actual number of moles of H2CO3 and ? (pK = 6.37)(A) I(B) II(C) III(D) IV(E) V

20. Many metabolic pathways involve multistep reactions. Consider the following pathway.Which of the following would be an example of feedback inhibition? (A)the product of the final reaction, F, interacting with E1. (B) F interacting with an allosteric site in E4. (C) B interacting with an allosteric site in E1. (D) all of the intermediates or products in the reaction interacting with the active site in E1

10. If the pH of 1 liter of a 1.0 M carbonate buffer is 7.0, what is actual number of moles of
H₂CO₃ and ? (pK = 6.37)

(A) I

(B) II

(C) III

(D) IV

(E) V

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