42- 46? 42. Which of the following is false A. Some bacteria, but not e B. Iron

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42- 46?

42. Which of the following is false A. Some bacteria, but not e B. Iron i ncerning the elemental requirements of bacteria aryotes, c s abundant, but often for it with siderophores C. ideropout often not ires, can utilize (and "fix") atmospheric nitrogen gas. a form easily utilized by bacteria, so they "go shopping" D E. smen odium and calcium as major nutrients. E. Sulfur containing amino inc . Trace elements are required for eproper activity of many enzymes. ning amino 43. Beta oxidation involves acids include methionine and cysteine. synthesis of a series of two-carbon compounds e splitting of hexoses into two-carbon units e production of disaccharides. from carbon dioxide. C. D the cleaving of two-carbon units from fatty acidc e cleavage of disaccharides into monosaccharides. 44. Which of the c following is the target of antibiotics penicillins and cephalosporins? is A. cross-linking peptid B. RNA or DNA synthesis. C. Folic acid synthesis. D. Protein synthesis. E. Membrane synthesis or function oglycan. 45. Which of the following would be the most likely and available choice for sterilizing heat labile liquids in different research and teaching labs at UTSA, while still retaining the materials in a usuable state? A. Membrane filtration B. Gamma radiation C. Autoclaving D. Hot air oven E. HEPA filter A. Water is split as a source of electrons. B. Oxygen is produced. C. ATP is produced. D. NADPH is produced. E. All of the above are true. 46. Which of the following is true of cyclic photophosphorylation.

Explanation / Answer

42. C. all bacteria require sodium and calcium as major nutrients.

43. D. the cleaving of two carbon units from fatty acid chain.

44. A. Cross linking peptidoglycan

45. A. Membrane filtration

46. C. ATP is produced

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