E. coli cell culture (1 ml) was diluted 1:1000000 and 200 l of this was used for plating. After 12h incubation of the plate, the number of colony forming units (CFU) was 150. What is the total CFUper ml in original culture ?

E. coli cell culture (1 ml) was diluted 1:1000000 and 200 l of this wa

1.	E. coli cell culture (1 ml) was diluted 1:1000000 and 200 l of this was used for plating. After 12h incubation of the plate, the number of colony forming units (CFU) was 150. What is the total CFUper ml in original culture ?
A.	7.5 10
B.	1.5 10
C.
D.	1.5 10
E.	3.0 10
Answer» B. 1.5 10

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E. coli cell culture (1 ml) was diluted 1:1000000 and 200 l of this was used for plating. After 12h incubation of the plate, the number of colony forming units (CFU) was 150. What is the total CFUper ml in original culture ?
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E. coli cell culture (1 ml) was diluted 1:1000000 and 200 l of this was used for plating. After 12h incubation of the plate, the number of colony forming units (CFU) was 150. What is the total CFUper ml in original culture ?

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