Which of these methods can be used to determine the number of viable microorganisms in a sample?

A. Counting a known volume of cells in a hemocytometer
B. Measuring colony forming units per ml
C. Measuring total cell mass
D. Light scattering in a spectrophotometer


Answer: B

Biology & Microbiology

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The process of using just enough heat to kill most (but not all) of the bacteria that cause spoilage in a beverage was developed by

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The finding that some phage genes have multiple initiation sites is evidence against what characteristic of the genetic code?

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