E-PolyLearning

26. Nichrome loop wire is used in which of the following techniques?
a. Pour-plate
b. Streak-plate
c. Spread-plate
d. Roll-tube technique
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Answer: (b).Streak-plate

27. Which device is used to pick a single bacterial cell from a mixed culture?
a. microscope
b. micropipette
c. microprobe
d. micromanipulator
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Answer: (d).micromanipulator

28. The National Collection of Type Cultures is situated in ____________
a. France
b. England
c. Germany
d. Japan
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Answer: (b).England

29. The American Type Culture Collection, located in Rockville, Maryland in the year 1980 has a collection of bacterial strain in what numbers?
a. 10,000
b. 11,000
c. 500
d. 11,500
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Answer: (d).11,500

30. Which of the following has a larger diameter?
a. well-separated colonies
b. crowded colonies
c. young colonies
d. old colonies
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Answer: (a).well-separated colonies

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