C photoheterotrophs support catabolism by using light

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C) Photoheterotrophs support catabolism by using light energy to catabolize organic molecules. D) Organotrophs would not use Fe 2+ , H 2 S, or H 2 as electron donors Question 29 Your answer is CORRECT. Which glucose catabolic pathway (A, B, C) is not correctly matched? A. Embden-Meyerhof-Parnas (Glycolysis) Pathwy B. Entner-Doudoroff Pathway C. Pentose-Phosphate Shunt A) Sugar acids catabolized to key intermediate, 6-phosphogluconate, then to pyruvate: B B) Can be used to form building blocks for biosynthesis such purines for DNA or aromatic amino acids: B C) Ribulose-5-P is the key intermediate formed in this pathway: C D) The presence of phosphorylated sugars: A, B, and C E) All are matched correctly. Question 30 Your answer is CORRECT. Which is applicable to fermentation? A) They use oxygen as a terminal electron acceptor. B) They utilize an electron transport system. C) Carbon dioxide is the end product of fermentations. D) NADH formed from glucose catabolism is oxidized by fermentation reactions. E) All are applicable to fermentation. Question 31 Your answer is INCORRECT. Which of the following statements is false with respect to the TCA cycle in microorganisms? A) It produces the most amount of NADH during aerobic respiration. B) In the presence of oxygen, pyruvate from glucose catabolism can be oxidized to CO 2 by the TCA cycle. C) The molecule that enters the cycle is pyruvate. D) Intermediates of the TCA cycle serve as building blocks for biosynthesis. E) None are false; all are true. Question 32 Your answer is CORRECT. Which does apply to the oxidative catabolism of aromatic compounds such as toluene and other benzene derivatives? A) It requires fermentation. B) It does not incorporate oxygen into the pathway intermediates. C) It forms the key intermediate catechol. D) It eventually feeds into the Pentose Phosphate shunt. E) Two of the above are correct Question 33 Your answer is CORRECT. Which is true regarding bioenergetics and energy carriers (i.e., NADH, ATP, etc) in metabolism?
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A) NAD+ is the form that accepts electrons. B) Formation of the energy carrier ATP is typically combined with a catabolic process. C) NADH is formed from the oxidation of food sources by microbes. D) Only a portion of the energy released during glucose catabolism is captured by different energy carriers. E) All are true. Question 34 Your answer is CORRECT. BONUS The prokaryotic 70S ribosome consists of A) two proteins and two RNAs. B) two RNAs and three proteins. C) three subunits and two RNAs. D) three RNAs and many proteins. Question 35 Your answer is INCORRECT. BONUS In the Ames test for mutagenesis, the presence of a large number of hisG gene revertants when grown on minimal media lacking histidine indicates that A) the mutagen tested is very potent (highly mutagenic) B) the revertants are capable of synthesizing histidine C) the mutagen tested is very weak (not mutagenic) D) A and B are correct E) B and C are correct Question 36 Your answer is CORRECT. Free points A) Pick me CASA WS 2 © 2004 CourseWare Development Group, NSM, UH.
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