BMS 602 Enterobacteriaceae Exam Questions and Answers 100% Solved
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Course
BMS 602
Institution
BMS 602
BMS 602 Enterobacteriaceae Exam
Questions and Answers 100% Solved
What type of bacteria is Enterobacteriaceae - Large, heterogeneous
family of medically relevant gram-negative rods
Where is Enterobacteriaceae normally found in the body - Many are
normal intestinal flora of animals and humans
...
What is Enterbacteriaceae main metabolic activity for differentiating
bacteria? - ✔✔Ferment or do not ferment lactose
MacConkey Agar (MAC) (2) functions? - ✔✔- Isolates (selects) and
differentiates Enterobacteriaceae based on their ability to ferment lactose
- Bile salts and crystal violet inhibit the growth of gram-positive organisms
What differentiates the organisms on MacConkey Agar (MAC)? -
✔✔Lactose and peptone and neutral red (pH indicator) differentiate the
organisms
MacConkey Agar (MAC) (2) outcome? - ✔✔1. If an organism ferments
lactose, colony pH will drop below 6.8, and turn pink/red
2. If the organism does NOT ferment lactose, it will use the peptone and
remain colorless/white
Hektoen Agar function? - ✔✔- Used to select and differentiate Salmonella
sp. And Shigella sp. from other bacteria in the family
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