Your boss gives you an experimental antibiotic and wants you to make some serial dilutions of...

Your boss gives you an experimental antibiotic and wants you to make some serial dilutions of it to determine the MIC of the reagent on E. coli. If the initial concentration is 100 mg/ml and your boss wants you to make ten 2-fold serial dilutions of it, what will the concentration of the seventh tube in the series be (pay attention to units!)?

a. 781.25 ug/ml

b. 0.78125 ug/ml

c. 3.125 mg/ml

d. 0.00001 mg/ml

Solutions

Expert Solution

Serial dilution is a dilution of a substance in a solution, in a stepwise manner. Serial dilution is done to increase the dilution factor and create a diluted a solution of a substance. A two-fold dilution decreases the concentration of a substance in the solution by 2.

Therefore, the correct answer is the option (a)

gladiator answered 1 year ago

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