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1A noncoliform bacteria can grow on endo agar.
A)True
B)False


2High levels of fecal contamination indicate the presence of only fecal bacteria (such as coliforms).
A)True
B)False


3In what way do lactose fermenting bacteria alter the pH of their environment?
A)Lactose fermenting bacteria decrease the pH of their environment.
B)Lactose fermenting bacteria increase the pH of their environment.


4Bacteria that produce a metallic sheen on Endo agar belong to which of the following categories?
A)Nonlactose fermenter
B)Lactose fermenter


5At this point you have covered two separate exercises involving measures of water quality. Exercise 28 covered the most probable number procedure and exercise 29 covered the membrane filtration method. Imagine you were given a water sample with a large amount of debris. Which method would you choose to test this water sample?
A)The most probable number procedure
B)The membrane filtration method





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