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Questions and Answers
What is the characteristic of Escherichia coli?
What is the characteristic of Escherichia coli?
- Motile and obligate aerobe
- Gram-positive bacilli
- Non-motile and obligate anaerobe
- Gram-negative bacilli (correct)
Campylobacter spp. are able to use sugars either oxidatively or fermentatively.
Campylobacter spp. are able to use sugars either oxidatively or fermentatively.
False (B)
What is the primary characteristic of Pseudomonas?
What is the primary characteristic of Pseudomonas?
Strictly aerobic
Acinetobacter are characterized by being ______________.
Acinetobacter are characterized by being ______________.
Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
What is the main characteristic of Chryseobacterium?
What is the main characteristic of Chryseobacterium?
Proteus mirabilis is a Gram-positive bacillus.
Proteus mirabilis is a Gram-positive bacillus.
What is the primary habitat of Proteus mirabilis?
What is the primary habitat of Proteus mirabilis?
What is the characteristic of Haemophilus?
What is the characteristic of Haemophilus?
Listeria spp. are obligate anaerobes.
Listeria spp. are obligate anaerobes.
What is the optimal growth temperature for Listeria monocytogenes?
What is the optimal growth temperature for Listeria monocytogenes?
Clostridium species are characterized by forming ______________________.
Clostridium species are characterized by forming ______________________.
Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
Which of the following is NOT a characteristic of Haemophilus?
Which of the following is NOT a characteristic of Haemophilus?
Clostridium species are oxygen tolerant.
Clostridium species are oxygen tolerant.
Haemophilus Type B vaccine is abbreviated as ______________________.
Haemophilus Type B vaccine is abbreviated as ______________________.
What is the characteristic of Escherichia coli in terms of its ability to grow in different environments?
What is the characteristic of Escherichia coli in terms of its ability to grow in different environments?
Campylobacter spp. are able to grow in the presence of normal oxygen levels.
Campylobacter spp. are able to grow in the presence of normal oxygen levels.
What is the primary source of energy for Campylobacter spp.?
What is the primary source of energy for Campylobacter spp.?
Pseudomonas is characterized by being ______________, with one or more polar flagella.
Pseudomonas is characterized by being ______________, with one or more polar flagella.
Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
Chryseobacterium is a Gram-positive rod.
Chryseobacterium is a Gram-positive rod.
What is the primary habitat of Proteus mirabilis?
What is the primary habitat of Proteus mirabilis?
What is the primary disease caused by Proteus mirabilis?
What is the primary disease caused by Proteus mirabilis?
What is the shape of Haemophilus bacteria?
What is the shape of Haemophilus bacteria?
Listeria spp. are obligate anaerobes.
Listeria spp. are obligate anaerobes.
What is the optimal growth temperature for Listeria monocytogenes?
What is the optimal growth temperature for Listeria monocytogenes?
Clostridium species are characterized by forming _______________.
Clostridium species are characterized by forming _______________.
Which of the following is a characteristic of Listeria monocytogenes?
Which of the following is a characteristic of Listeria monocytogenes?
Match the following bacteria with their characteristics:
Match the following bacteria with their characteristics:
Clostridium species are oxygen tolerant.
Clostridium species are oxygen tolerant.
What is the characteristic of Haemophilus that makes it super virulent?
What is the characteristic of Haemophilus that makes it super virulent?
Study Notes
Escherichia coli (E. coli)
- Gram-negative bacillus
- Motile and facultative anaerobe
- Non-lactose fermenter and urease-negative
- Oxidase and H2S-negative
Campylobacter spp.
- Gram-negative, slender, curved, or spiral-shaped rods
- Motile with single polar unsheathed flagellum
- Microaerophilic and capnophilic
- Grow at 42°C, adapted to chickens with higher body temperature
- Unable to use sugars, derive energy from amino acids
- Virulence factors: motility and heat-labile enterotoxin
Pseudomonas spp.
- Gram-negative rods
- Motile with polar flagella
- Non-spore former
- Strictly aerobic, oxidase-positive, and catalase-positive
Acinetobacter spp.
- Gram-negative short bacilli in pairs
- Non-motile, capsulated, and strictly aerobic
- Oxidase-negative and catalase-positive
Chryseobacterium spp.
- Gram-negative rods
- Non-motile, yellow pigment on blood agar (BA)
- Strictly aerobic, oxidase-positive, and catalase-positive
Proteus mirabilis
- Gram-negative bacillus, highly motile
- Facultative anaerobic, non-lactose fermenter, and oxidase-negative
- Urease-positive, causes urinary tract infections (UTIs)
Haemophilus spp.
- Gram-negative, pleomorphic small bacilli
- Non-motile, non-spore former, and encapsulated
- Aerobic, facultatively anaerobic, oxidase-positive, and catalase-variable
- Capsulated forms are Type B, highly virulent, and prevented by HIB vaccine
Listeria spp.
- Gram-positive coccobacilli, motile at room temperature
- Non-spore former, facultatively anaerobic, and intra-cellular
- Oxidase-negative, catalase-positive, and β-haemolytic
- Grow optimally at 35-37°C, but also at 4°C
- Associated with unwashed lettuce, deli meats, and vulnerable individuals (e.g., pregnant women)
Clostridium spp.
- Gram-positive, straight or curved rods, forming chains
- Spore former, motile with peritrichous flagella
- Obligate anaerobes, saccharolytic, and proteolytic
- Catalase-negative, with some species oxygen-tolerant or dying in oxygen
Escherichia coli (E. coli)
- Gram-negative bacillus
- Motile and facultative anaerobe
- Non-lactose fermenter and urease-negative
- Oxidase and H2S-negative
Campylobacter spp.
- Gram-negative, slender, curved, or spiral-shaped rods
- Motile with single polar unsheathed flagellum
- Microaerophilic and capnophilic
- Grow at 42°C, adapted to chickens with higher body temperature
- Unable to use sugars, derive energy from amino acids
- Virulence factors: motility and heat-labile enterotoxin
Pseudomonas spp.
- Gram-negative rods
- Motile with polar flagella
- Non-spore former
- Strictly aerobic, oxidase-positive, and catalase-positive
Acinetobacter spp.
- Gram-negative short bacilli in pairs
- Non-motile, capsulated, and strictly aerobic
- Oxidase-negative and catalase-positive
Chryseobacterium spp.
- Gram-negative rods
- Non-motile, yellow pigment on blood agar (BA)
- Strictly aerobic, oxidase-positive, and catalase-positive
Proteus mirabilis
- Gram-negative bacillus, highly motile
- Facultative anaerobic, non-lactose fermenter, and oxidase-negative
- Urease-positive, causes urinary tract infections (UTIs)
Haemophilus spp.
- Gram-negative, pleomorphic small bacilli
- Non-motile, non-spore former, and encapsulated
- Aerobic, facultatively anaerobic, oxidase-positive, and catalase-variable
- Capsulated forms are Type B, highly virulent, and prevented by HIB vaccine
Listeria spp.
- Gram-positive coccobacilli, motile at room temperature
- Non-spore former, facultatively anaerobic, and intra-cellular
- Oxidase-negative, catalase-positive, and β-haemolytic
- Grow optimally at 35-37°C, but also at 4°C
- Associated with unwashed lettuce, deli meats, and vulnerable individuals (e.g., pregnant women)
Clostridium spp.
- Gram-positive, straight or curved rods, forming chains
- Spore former, motile with peritrichous flagella
- Obligate anaerobes, saccharolytic, and proteolytic
- Catalase-negative, with some species oxygen-tolerant or dying in oxygen
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Description
Test your knowledge of the characteristics and properties of Escherichia coli and Campylobacter bacteria. Learn about their gram stain results, motility, and other key features.
