Environmental Microbiology Exam 3 Spring 2018 (100 pts) The ability of the Deino
ID: 3164478 • Letter: E
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Environmental Microbiology Exam 3 Spring 2018 (100 pts) The ability of the Deinococci to resist radiation is due in part to an 31. A. True or B. False unusual ability to repair chromosome damage, even fragmentation. $2. A. True or B.False Green sulfur bacteria are nonmotile but can control their depth by using gas vesicles to control buoyancy accessory pigments are located in 33. In the green sulfur and green nonsulfur bacteria, membranous vesicles called A chlorosomes; B chloroplasts; C pirellulosome; D.phycobilisomes 34. Which of the following have phycobilisomes lining thylakoid membranes? A. Purple sulfur bacteria; B. Green sulfur bacteria; C. Cyanobacteria; D. Green Nonsulfur bacteria; E. All of the above 35. Cyanobacter ria are prokaryotes that carry out oxygenic photosynthesis like green plants; this means that: A. they use water as their electron source. B. they produce oxygen as a by-product of photosynthesis. C. they have two distinct photosystems. D. All of the choices are correct. 36. Large spherical cells of cyanobacteria that are able to fix atmospheric nitrogen are referred to A. heterocysts; B. akinetes; C. anammoxosome; D. nitrocysts 37. Species in Phylum Planctomycetes have which of the following unique characteristics A. Mechanisms for dealing with high salt environments; B. The ability to reduce metals; C. Thaumarchaeol lipid membranes; D. Lack peptidoglycan in cell walls and have intracellular membrane-bound compartments 38. In the anammox reaction, the electron donor is the ion. A. ammonium; B.nitrate; C. nitrite; D. aluminum 39. A. True or B. False It is estimated that the anammox reaction may contribute as much as 40% to the cycling ofnitrogen in the world's oceans. 40. Some anoxygenic photosynthetic bacteria use A. hydrogen sulfide; B. sulfur; C. hydrogen; D. all of these as their electron source. 41. The genus Bacteroides inhabit the intestinal tract of mammals and benefit the host by degrading which of the following? A. Cellulose and chitin; B. methanol; C.methane; D. hydrogen sulfide 42. A. True or B. False Gliding motility is a mechanism used by some prokaryotes to swim slowly through liquids.Explanation / Answer
31. True.
32. True
33. Option A is correct.
34. Option C is correct.
35. Option D is correct.
36. Option A is correct.
37. Option A is correct.
38. Option A is correct.
39. A
40. option D is correct.
41. Option A is correct.
42. A
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