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Welcome to the largest collection of MCQs on the Internet. Access and Discuss these Multiple choice questions for various competitive Exams and Interviews.
1. Which of the following is an indirect method for measuring bacterial growth?
a. Cell count
b. Cell mass
c. Cell activity
d. Both Cell mass and Cell activity
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Answer: (c).Cell activity

2. Which of the following instrument is used for bacterial count?
a. Petroff-Hausser counting chamber
b. Microscope
c. Chemostat
d. Turbidostat
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Answer: (a).Petroff-Hausser counting chamber

3. Which of the following method is used for viable count of a culture?
a. Direct microscopic count
b. Plate-count method
c. Membrane-filter count
d. Plate-count method and membrane-filter count
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Answer: (d).Plate-count method and membrane-filter count

4. The number of bacteria per ml depends on the dilution of the sample.
a. True
b. False
c. May be
d. Can't say
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Answer: (a).True

5. Which of the following is the relationship between optical density and cell mass?
a. exponentially proportional
b. linearly proportional
c. inversely proportional
d. not related
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Answer: (b).linearly proportional

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