E-PolyLearning

31. Surface texture of strains are related to virulence.
a. True
b. False
c. May be
d. Can't say
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Answer: (a).True

32. What is the color of colonies of Staphylococcus aureus?
a. Pink
b. Red
c. Violet
d. Gold
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Answer: (d).Gold

33. Pyoverdin is which type of pigment?
a. water-insoluble pigment
b. water-soluble pigment
c. fluorescent pigment
d. sparingly water-soluble pigment
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Answer: (c).fluorescent pigment

34. Growth in broth cultures occurs mainly in the form of __________
a. slightly turbid
b. heavy surface pellicle
c. sediment
d. viscous
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Answer: (b).heavy surface pellicle

35. Which bacteria among the following produces a water-insoluble pigment?
a. Mycobacterium kansasii
b. Pseudomonas aeruginosa
c. Chromobacterium violaceum
d. Pseudomonas chlororaphis
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Answer: (c).Chromobacterium violaceum