Description Work out the following problems. Draw the structure of the weak acid pyruvic acid. What is the name of the conjugate base of pyruvic acid? The typical total concentration of pyruvic acid (combined weak acid and conjugate base form) in the cytoplasm of a red blood cell is 0.051 M. What are the concentrations of the weak acid and conjugate base forms of pyruvic acid in a typical red blood cell (the pH in the cytoplasm of a red blood cell is 7.4 and the Ka of pyruvic acid is 3.2 × 10-3)? On a separate sheet of paper, neatly draw the structure of ATP as it would appear in solution at pH 7. Is ATP a nucleotide or a nucleoside? Label the nitrogenous base that appears in ATP with its name. Is this a purine or pyrimidine base? Correctly number the atoms in the base. Label the sugar that appears in ATP. Is this a triose, tetrose, pentose, or hexose sugar? Is it in a furanose or pyranose form? Correctly number each of the carbon atoms in the sugar. What is the name of the bond that links the base and the sugar? Name the types of linkages that connect the ?-, ?-, and ?-phosphoryl groups to the rest of the ATP molecule. Calculate the equilibrium constant (Keq) for formation of glucose-1-phosphate at 37°C according to the chemical reaction (refer to Table 14-3): Glucose + HPO42- ? Glucose-1-phosphate + H2O Calculate the equilibrium constant (Keq) for formation of glucose-1-phosphate at 37°C according to the chemical reaction (refer to Table 14-3): Glucose + ATP ? Glucose-1-phosphate + ADP On a separate sheet of paper, neatly draw the structure of nicontinamide adenine dinucleotide in its oxidized form (NAD+). What RNA nucleotide is present within the structure of NAD+? Redraw the nicotinamide ring as it would appear in the reduced form (NADH). Calculate the equilibrium constant (Keq) for the oxidation of NADH by FAD at 37°C (refer to Table 14-4)
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