Micro Lab 5

Front 1

method of estimating the number of coliforms or other organisms in a water sample and onsists of the presumptive, confirmed, and completed tests

Back 1

Most Probable Number

Front 2

organisms associated with the intestinal tract- occurrence n water sample indicates fecal contamination and suggests that harmful bacteria such as Salmonella could be present

Back 2

indicator organisms

Front 3

indicator organism that meets the following criteria: gram negative rod, non-sporeforming, facultative anaerobe, ferments lactose to acid and gas in 48 hours at 37C

Back 3

coliform

Front 4

Membrane Filter Method: uses membrane with pore size of _____

Back 4

0.45 micrometers

Front 5

m Endo broth MF or EMP agar are selective and differential medium for ______

Back 5

coliforms

Front 6

Endo broth and EMP are selective due to _____ and ____ which are inhibitory to _____

Back 6

bile salts, sodium lauryl sulfate, gram positive organisms

Front 7

acids from Endo broth MF or EMP react with basic fuschin to produce coliform organisms that have what characteristic

Back 7

metallic green sheen

Front 8

for the membrane filter method, how much water was used for the first Endo broth MF/EMB plate and how much for the second?

Back 8

10ml and 20ml