Thanks Examination IV Datel 12U 20/2016 BIOL 261.00 Fall 2016 Dr. Bolnet Answer

Question

Thanks Examination IV Datel 12U 20/2016 BIOL 261.00 Fall 2016 Dr. Bolnet Answer all the following questions the answer sheet provided Please return questions (so) on nswers sheets. Time a lowed 1 hour Fill in the blanks O-3) the following strepioooooi? What tests would you use for the presumptive identification of streptococci All group D 3, Group C streptococci Please the blanks orows de behavior of the medically important suptowosossi in Oor ds. the following tests 4 9. Alpha toxin 15. 16 Mannitol (acid only) 12 Biotin for growth 13 True or False (19-21) characteristics but differ in their antigenic 19. Serovars are strain that have similar biochemical 20. Some Ecoli strains produce toxins that are similar to the cholera toxin 21.The Shigella infect only primate hosts Enrichment media most frequently used to favor the growth ofSalmonella and Shigella? 24. mannitol salt agar 22. Selenite F 23. Gram negative broth differential media Hektoen enteric agar, and Xylose Lysine Desoxycholate agar are because they all contain dye 27. mannitol and a dye 25. lactose and a dye 26, glucose and a In MacConkey agar, coliform colonies are 29. yellow 30, greenish-blue 31. red 28. orange In Hektoen enteric agar, Salmonella and Shigella colonies are 32, orange 33. yellow 34. greenish-blue 35. red In xylose Lysine agar, coliform colonies are 36. orange 37. yellow 38. greenish-blue 39, red In xylose Lysine Desoxycholate agar, lla and Shigella colonies are 40, orange 41. yellow 42. greenish-blue 43. red True or False (44.50

Explanation / Answer

22. gram negative broth

25. lactose and dye

28. red

32. greenish blue

36. red

40. red

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