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FinalProcticeProblem - 114A 2007 1 In a conjugated protein...

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114A FinalPracticeProblem: 2007 1. In a conjugated protein, a prosthetic group is: A) a part of the protein that is not composed of amino acids. B) a fibrous region of a globular protein. C) a subunit of an oligomeric protein. D) synonymous with "protomer." E) a nonidentical subunit of a protein with many identical subunits. 2. The functional differences, as well as differences in three-dimensional structure, between two different enzymes from E. coli result directly from their different: A) roles in DNA metabolism. B) amino acid sequences. C) secondary structures. D) roles in the metabolism of E. coli. 3. Even when a gene is available and its sequence of nucleotides is known, chemical studies of the protein are still required to determine: 4. Why is ethanol used to treat poisoning by methanol or ethylene glycol? 5. Why do the furanose and pyranose forms of monosaccharides predominate in nature? 6. How can an enzyme produce a chiral product from a nonchiral or prochiral substrate? 7. Give an explanation for the inability of a zymogen to catalyze a reaction. 8. Which of the following statements about sterols is true? A) Sterols are found in the membranes of all living cells. B) The principal sterol of animal cells is ergosterol. C) All sterols share a fused-ring structure with four rings. D) Sterols are very soluble in water, but less so in organic solvents such as chloroform. 9. Which of the following is true of sphingolipids? 10. In an aqueous solution, protein conformation is determined by two major factors. One is the formation of the maximum number of hydrogen bonds. The other is the:
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FinalProcticeProblem - 114A 2007 1 In a conjugated protein...

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