Which of the Following is an Indirect Method for Estimating

Question

Which of the following is an indirect method for estimating the number of microbes in a sample?
A) viable plate counts
B) turbidity
C) Coulter counter
D) MPN
E) membrane filtration

Accepted Answer

Turbidity is an indirect method as it measures the cloudiness of a culture, which correlates with microbial growth but does not count individual cells directly.