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Question: 4 cell volume and mass in a bacterial growth culture...

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#4: Cell volume and mass in a bacterial growth culture Consider a batch culture of spherical shaped bacteria in a growth medium or broth, in which the mean cell dimensions of the spherical shaped (cocci) bacteria are 0.7 um (micron) in diameter. Show all your calculations and assumptions in answering the questions below: a. What is the volume of one of these spherical cells, expressed in liters? b. If, at one point in time, there are 8 x 1012 cells in one liter of this culture broth, what percentage of the volume is occupied by bacteria and what percentage is occupied by the broth (water only)? If the cells contain 85% water, what is the dry cell concentration, expressed as grams dry weight/Liter of broth? State any assumptions you make in completing this calculation. C.
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