248 colonies were counted off the 10-2 subsequent dilution of a hamburger slurry

Question

248 colonies were counted off the 10-2 subsequent dilution of a hamburger slurry with an initial dilution of 1/100. 21 colonies were counted off the 10-3 dilution. What is the number of cells/g in the original hamburger sample provided 0.1 mL of each dilution was plated?

a) 248 x 10^7

b) 2.48 x 10^7

c) 2.10 x 10^8

d) 21x10^7

e) 2.29 x 10^8

Multiple choice 248 colonies were counted off the 10-2 subsequent dilution of a hamburger slurry with an initial dilution of 1/100. 21 colonies were counted off the 10-3 dilution. What is the number of cells/g in the original hamburger sample provided 0.1 mL of each dilution was plated? 248 x 10 O 2.48 x 10 2.10 x 10 O 21 x 10 2.29 x 108

Explanation / Answer

The number of cells/g in the original Hamburger sample provided 0.1 ml of each dilution plated would be 2.48x10^7.

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