If you performed the serial dilution using 0.9ml of tapwater originally and mixed and transferred 0.1 ml each time, what would be your dilution in tube 8

"If you count 70 colonies from a urine culture obtained using 0.001ml calibrated loop, how many colony forming units (CFU) will be reported?"     70     700     7000     70000     700000

A test procedure calls for 5 mL of undiluted specimen.   2 mL of a 1:50 dilution is used. The answer obtained is 30 mg/dL. What answer should be reported?

50 g of food is homogenized in 450 mL of water. From this, 1 mL is added to 29 mL of water, and then a 1:90 dilution is made from this, and then 1 mL from this is added to 99 mL of water, and then 100 uL of this last dilution is plated and after incubation 164 colonies are counted.a) What was the overall dilution factor?b) What was the total CFU/g of the original sample?