You have a bacterial culture with a concentration of 3.4 x 10^9 cells/ml. If you dilute the culture 10^-8, what would be the final concentration? If you then plate 1 ml of the culture, how many colonies would you expect?
Working with serial dilutions. - You performed the following dilution series on a culture of Escherichia coli:
1 ml of the original culture to 99 ml broth
then 1 ml cell suspension to 9 ml broth
then 2 ml to 8 ml broth
then 0 ...
Microbiology Questions - 1. Define natural competency?
2. What is a serial dilution?
3 True or False. You can use plaque assay to determine the number of a lysogenic phage?
4. Can a spectrophotometer be used to measu ...
MIC Calculation & Dilution series - The MIC of penicillin for Staphylococcus epidermis was determined to be in tube #5. The starting concentration was 1000g/ml in tube #1 and a 5-fold dilution was performed. What is the MIC? Sho ...
Dilution Series - If you had a liquid culture of Staphylococcus aureus and transferred 2ml to test tube “R”, which contains 8ml of nutrient broth, what would be the final dilution (in simplest terms) of the culture in ...
Pipetting and diluting - A solution has a concentration of 3.8mg/ml of protein.
a) 7 μl of a 10-5 dilution of the original solution contains how much protein?
b) How much should you dilute the original solution to ...