Which of these methods can be used to obtain a total cell estimate? Group of answer choices Most probably number estimations Any of the methods listed Plate counts of serial dilutions Optical density measurement
Question
Which of these methods can be used to obtain a total cell estimate?
Group of answer choices
Most probably number estimations
Any of the methods listed
Plate counts of serial dilutions
Optical density measurement
Solution
All of the methods listed can be used to obtain a total cell estimate.
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Most probable number estimations: This is a statistical method used to estimate the number of viable microorganisms in a sample. It is based on the principle that the more organisms present, the more dilutions needed to reduce the density to the point where no organisms are left.
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Plate counts of serial dilutions: This is a common method used to estimate the number of viable cells in a sample. A sample is diluted in a series of steps, and a small volume from each dilution is spread onto a solid medium. After incubation, the colonies are counted, and the original cell concentration is calculated.
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Optical density measurement: This is a quick and non-destructive method used to estimate the number of cells in a liquid culture. It is based on the principle that the denser the cell culture, the more light it will absorb.
So, the answer is "Any of the methods listed".
Similar Questions
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