Richard loves his job working for the Tri-County Water District. In his seven years with the district, he has had many different jobs; currently he is a Waste Water Treatment Laboratory Technician. Today, he is doing his routine visit to one of the three Waste Water Treatment Facilities, where he’ll collect samples of the treated water to take back to the lab. At the lab, his coworker Joey will do a chemical analysis of the water, while he does the microbiological analysis. To collect the samples at the waste water facility, Richard first dons his gloves, and then he uses the grab sample technique to fill his various containers, filling the sterile glass flasks he will use for his micro analysis last. To preserve the chemical integrity of the water sample and accurate microbial population estimates, these samples have to be chilled, and the analysis must begin within the hour. Once all of his samples are collected, he disinfects the outside of the containers, removes his gloves, and disposes of them in the biohazard bin. After washing his hands, he gets out a waterproof pen to label the containers with his name, the sample site location, and the date and time of the sample collection. Back at the lab, Richard gives the chemistry samples to Joey, and then heads to his microbiology lab. He starts setting up his tests to look for Enterobacteriaceae in the water samples. Which of the following best describes the Enterobacteriaceae group (enteric bacteria)? Select the correct answer. Select the correct answer. found only in the intestine of mammals Gram-negative bacillus found in many locations including animal intestines pathogenic species only all motile, encapsulated non-pathogens Gram-positive bacillus
