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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
Are Enterobacteriaceae ubiquitous organisms? - ✔✔YES
Ubiquitous organisms, found worldwide in soil, water, and vegetation
What type of infections does Enterbacteriaeae cause? - ✔✔30% to 35% of
all septicemias, more than 70% of urinary tract infections (UTIs), and many
intestinal infections
Enterbacteriaeae originate? - ✔✔Can origninate from animal or human
carrier or through endogenous spread
Is Enterobacteriaceae motile, form endospores, or need oxygen - ✔✔-
Either non-motile or motile with peritrichous flagella
- Do NOT form endospores
, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
- Facultative anaerobes
Characteristic physiology of Enterobacteriaceae - ✔✔Ferment glucose,
reduce nitrate, catalase positive, oxidase negative
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
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
Are Enterobacteriaceae ubiquitous organisms? - ✔✔YES
Ubiquitous organisms, found worldwide in soil, water, and vegetation
What type of infections does Enterbacteriaeae cause? - ✔✔30% to 35% of
all septicemias, more than 70% of urinary tract infections (UTIs), and many
intestinal infections
Enterbacteriaeae originate? - ✔✔Can origninate from animal or human
carrier or through endogenous spread
Is Enterobacteriaceae motile, form endospores, or need oxygen - ✔✔-
Either non-motile or motile with peritrichous flagella
- Do NOT form endospores
, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
- Facultative anaerobes
Characteristic physiology of Enterobacteriaceae - ✔✔Ferment glucose,
reduce nitrate, catalase positive, oxidase negative
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
