ch 5 micro

  1. Which of the following compounds is NOT an enzyme?




    A)
  2. Which organism is NOT correctly matched to its energy source?




    B)
  3. Which of the following statements about anaerobic respiration is false?




    A)
  4. What is the fate of pyruvic acid in an organism that uses aerobic respiration?




    B)
  5. Fatty acids are catabolized in




    C)
  6. Which of the following is the best definition of oxidative phosphorylation?



    A)
  7. Which of the following statements about substrate-level phosphorylation is false?




    C)
  8. Which of the following statements about photophosphorylation is false?




    C)
  9. A strictly fermentative bacterium produces energy




    C)
  10. The advantage of the pentose phosphate pathway is that it produces all of the following EXCEPT




    B)
  11. Which of the following statements about beta oxidation is false?




    E)
  12. In noncyclic photophosphorylation, O2is produced from




    C)
  13. Which of the following is the best definition of fermentation?




    E)
  14. Which of the following is NOT necessary for respiration?




    E)
  15. Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, α-ketoglutarate dehydrogenase?




    D)
  16. In green and purple bacteria, electrons to reduce CO2 come from




    B)
  17. Assume you are growing bacteria on a lipid medium that started at pH 7. The action of bacterial lipases should cause the pH of the medium to


    A)
  18. Which of the following uses CO2 for carbon and H2 for energy?



    B)
  19. Which of the following uses glucose for carbon and energy?



    B)
  20. Which of the following has bacteriochlorophylls and uses alcohols for carbon?



    D)
  21. Cyanobacteria are a type of



    B)
  22. Which statements are true? 1—Electron carriers are located at ribosomes. 2—ATP is a common intermediate between catabolic and anabolic pathways. 3—ATP is used for the long-term storage of energy and so is often found in storage granules. 4—Anaerobic organisms are capable of respiration. 5—ATP is generated by the flow of protons across the cell membrane.




    B)
  23. ) C2H5OH (Ethanol) ---Acetobacter-->  C2H3OOH (Acetic acid) Which of the following is true about this reaction? A) This process requires O2. B) This process occurs anaerobically.
    A
  24. C6H12O6(Glucose)  ----Saccharomyces--->   2C2H5OH (Ethanol) + 2CO2    Which of the following is true about this reaction? A) This process requires O2. B) This process occurs anaerobically.
    B
  25. NO3- (nitrate ion) + 2H+  ---Pseudomonas--->  NO2- (nitrite ion) + H2O Which of the following is true about this reaction? A) This process requires O2. B) This process occurs anaerobically.
    B
  26. 2H+  --E. coli----> H2O    Which of  the following is true about this reaction? A) This process requires O2. B) This process occurs anaerobically
    A
  27. Assume you are working for a chemical company and are responsible for growing a yeast culture that produces ethanol. The yeasts are growing well on the maltose medium but are not producing alcohol. What is the most likely explanation?




    D)
  28. The rates of O2 and glucose consumption by a bacterial culture are shown in Figure 5.6. Assume a bacterial culture was grown in a glucose medium without O2. Then O2 was added at the time marked X. The data indicate that



    D)
  29. An enzyme, citrate synthase, in the Krebs cycle is inhibited by ATP. This is an example of all of the following EXCEPT




    E)
  30. A shipping company employee notices that the inside of ships' hulls where ballast water is stored are deteriorating. The hull paint contained cyanide to prevent microbial growth. Bacteria were growing on the hulls. You can therefore conclude that the





    B)
  31. Beggiatoa bacteria get energy by oxidizing S2-to S6+. This means they take ________ for their ________.




    D)
  32. A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely



    D)
  33. Gallionella bacteria can get energy from the reaction Fe2+ → Fe3+. This reaction is an example of




    B)
  34. A urease test is used to identify Myobacterium tuberculosis because




    A)
  35. Compare and contrast photophosphorylation and oxidative phosphorylation
  36. Rhodopseudomonas is an anaerobic photoautotroph that uses organic compounds as an electron donor. It is also capable of chemoheterotrophic metabolism. Diagram the metabolic pathways of this bacterium.
  37.  Identify the catabolic pathways used by the following bacteria.
    Pseudomonas Oxidizes glucose
    Lactobacillus Ferments glucose
    Alcaligenes Neither oxidizes nor ferments glucose
    Escherichia Oxidizes and ferments glucose
  38.  Differentiate the following two laboratory tests: starch hydrolysis and starch fermentation
  39. Streptococcus lacks an electron transport chain. How does this bacterium reoxidize NADH? Where is the NADH formed?
  40. You look in the refrigerator and find some orange drink you had forgotten was there. The drink now has an off taste and bubbles. What is the most likely explanation for the changes in the drink?
  41. Why is Clostridium perfringens likely to grow in gangrenous wounds?
  42. Which of the following reactions produces the most molecules of ATP during aerobic metabolism?




    E)
  43. Which of the following processes does not generate ATP?




    B)
  44. Which of the following compounds has the greatest amount of energy for a cell?




    E)
  45. Which of the following is the best definition of the Krebs cycle?




    E)
  46. Which is the following is the best definition of respiration?




    D)
  47. Which produces the most lactic acid?



    B)
  48. Which culture produces the most ATP?




    A)
  49. Which culture uses NAD+?




    C)
  50. Which culture uses the most glucose?




    B)
Author
XQWCat
ID
176668
Card Set
ch 5 micro
Description
microbiology test 2 chapter 5
Updated