Exam-4-(5-11-10)-fin_42275

Exam-4-(5-11-10)-fin_42275 - Exam 4 ID BCHS 3305 Spring...

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Exam 4 BCHS 3305 Spring 2010 ID Name ___________________________ There are 30 multiple choice (p1-6), and 4 short answer and matching (p7-10) questions. Answer all questions. *One bonus question (p11). Multiple choice: answer all 30. 2 pts each. Total 60 pts 1. Nitrogenase carries out the reaction that reduces nitrogen to A. NH 3 B. NO C. NO 2 D. NO 3 - E. CN - 2. The total cost of nitrogen reduction is 8 electrons and A. 2 ATP B. 4 ATP C. 8 ATP D. 16 ATP E. 32 ATP 3. Glucose is the preferred fuel of muscles because it can be metabolized under ______ conditions. A. anaerobic B. acidic C. alkaline D. high temperature E. low temperature 4. Which of the following reactions is catalyzed by adenylate cyclase? A. ATP cADP + P i B. ATP cATP C. ADP cAMP + P i D. ATP cAMP + PP i E. AMP cAMP 5. The neurotransmitters DOPA, dopamine, epinephrine, and norepinephrine are synthesized from the amino acid _________. A. Serine B. Glutamate C. Tyrosine D. Threonine E. Glutamine 1
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Exam 4 BCHS 3305 Spring 2010 6. Complete this reaction: UTP + Glutamine + ATP + H 2 O Glutamate + ADP + P i + ______ A. ATP B. GTP C. CTP D. UTP E. TTP 7. Ketogenic amino acids are broken down to acetyl-CoA or ______. A. Acetoacetate B. Oxaloacetate C. Succinyl-CoA D. Fumarate E. α -ketoglutarate 8. Which of the following best describes the function of AMP-dependent protein kinase (AMPK)? A. It activates metabolic pathways that generate ATP and inhibits biosynthetic pathways B. It activates biosynthetic pathways and inhibits metabolic pathways that generate ATP C. It activates both ATP-generating and biosynthetic pathways D. It inhibits both ATP-generating and biosynthetic pathways E. None of the above are correct 9. John Buchanan elucidated the synthesis of purine nucleotides by studying isotope positions in excreted ______. A. Urea B. Uric acid C. Pyrimidine D. NH 4 + E. DNA 10. Atoms from the amino acids ______ are utilized in purine biosynthesis. A. Asn, Gly, Gln B. Asp, Gly, Gln C. Asn, Gly, Arg D. Asp, Gly, Glu E. Asn, Gly, Glu 2
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Exam 4 BCHS 3305 Spring 2010 11. Class I ribonucleotide reductases (RNR) contain a(n) ________ prosthetic group. A. N5 , N10 -Methylenetetrahydrofolate B. Vitamin B 1 C. Iron, Fe(III) D. Folic acid E. S -adenosylmethionine 12. The enzyme ________ is critical to regulating nitrogen metabolism. A. Glutamate dehydrogenase B. Glutathione peroxidase C. Glutamate synthase D. Glutamine synthetase E. Glutathione reductase 13. Insulin binds to a receptor that possesses ______ activity. A.
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Exam-4-(5-11-10)-fin_42275 - Exam 4 ID BCHS 3305 Spring...

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