Final Exam 2007

Final Exam 2007 - Name _ Student # _ BCHM 2024 Final...

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Name _____________________________________ Student # ______________________________ BCHM 2024 Final Examination May, 2007 Use the following amino acids to answer questions 1 through 5. Note that none of these amino acids is shown in the correct charge form at pH 7. H 2 N CH C CH 2 OH O OH H 2 N CH C CH 2 OH O OH H 2 N CH C CH 2 OH O N NH H 2 N CH C CH 2 OH O OH A B C D E F H 2 N CH C CH 2 OH O CH 2 C NH 2 O H 2 N CH C CH 2 OH O CH 2 CH 2 NH C NH 2 NH 1. Which amino acid is serine (Ser)? B 2. Which amino acid is tyrosine (Tyr)? E 3. Which amino acid is glutamine (Gln)? C 4. Which amino acid is arginine (Arg)? A 5. If the six amino acids shown above were linked together by peptide bonds in the order A-B-C-D-E-F, what would be the net charge of that peptide be at pH 7.0? Assume the side chain of amino acid F is uncharged at pH 7. A. -3 E. +1 B. -2 F. +2 C. -1 G. +3 D. 0
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6. RNA is formed by linking nucleotides together in what type of bonds? A. Phosphoanhydride C. Phosphoester B. Phosphodiester D. Phosphoamide 7. The pKa of an acid is defined as: A. The logarithm of the hydroxide ion concentration B. The negative logarithm of the hydroxide ion concentration C. The negative logarithm of the dissociation constant D. The negative logarithm of the hydrogen ion concentration 8. Hydrogen covalently bonded to what atoms can form hydrogen bonds? A. Carbon and hydrogen D. Nitrogen and carbon B. Carbon and oxygen E. All of the above C. Nitrogen and oxygen 9. In humans, large amounts of amino acids are stored in: A. Heart D. Pancreas B. Liver E. Spleen C. Kidneys F. None of the above 10. The process of duplicating DNA is called ____. A. Translation D. Ligation B. Proteolysis E. Transcription C. Replication F. Lipolysis 11. The process of copying a strand of DNA into RNA is called_ E ___. Use the choices for question # 10. 12-13. Competitive inhibitors change the __ B __ and non-competitive inhibitors change the __ A __ of enzyme-catalyzed reactions. A. V max D. Both A and B B. K m E. Both A and C C. [S] F. Both B and C 14. Fatty acids for energy use are stored primarily in what form? A. Sphingomyelin D. Oleic acid (18:1, 9 ) B. Triacylglycerols E. Phosphatidyl choline C. Palmitic acid F. Arachidonic acid (20:4, 5,8,11,14 ) 15. Which of the compounds listed as choices for question # 14 is a major membrane phospholipid with a glycerol backbone? E 16.
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Final Exam 2007 - Name _ Student # _ BCHM 2024 Final...

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