Equal volumes of cell suspensions of Escherichia coli, Saccharomyces cerevisiae, Streptococcus lactis and Mycoplasma pneumoniae, all have the same OD600nm = 0.50. Which cell suspension would have the minimum and maximum number of cells, respectively?
closed as off-topic by De Novo, theforestecologist♦ Mar 23 at 11:53
This question appears to be off-topic. The users who voted to close gave this specific reason:
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Difficult to say with the information you have given. Here is a paper on the subject if you are interested. The relationship between OD and cell count depends on morphology and size, which in turn depend on culture condition, strain, etc...