Podcast
Questions and Answers
Which of the following is a characteristic of Enterobacteriaceae?
Which of the following is a characteristic of Enterobacteriaceae?
- Gram positive bacilli
- Oxidase positive
- Facultative anaerobes (correct)
- Non-fermenters of glucose
What is the primary habitat of coliforms like Escherichia coli within the Enterobacteriaceae family?
What is the primary habitat of coliforms like Escherichia coli within the Enterobacteriaceae family?
- In the respiratory system
- In water bodies
- In the colon of the normal flora (correct)
- In the soil
Which of the following is true about lactose non-fermenters within the Enterobacteriaceae family?
Which of the following is true about lactose non-fermenters within the Enterobacteriaceae family?
- Used as biological indicators in water analysis (correct)
- Are always aerobic bacteria
- Primarily found in the digestive tracts of animals
- Ferment lactose to produce acid and gas
Which of these tests would be positive for Enterobacteriaceae?
Which of these tests would be positive for Enterobacteriaceae?
What is a general characteristic of Escherichia coli within the Enterobacteriaceae family?
What is a general characteristic of Escherichia coli within the Enterobacteriaceae family?
What antigenic composition is common to all members of the Enterobacteriaceae family?
What antigenic composition is common to all members of the Enterobacteriaceae family?
Which type of E.coli is known to cause 'traveler's diarrhea'?
Which type of E.coli is known to cause 'traveler's diarrhea'?
Which type of E.coli causes outbreaks of neonatal diarrhea in nurseries?
Which type of E.coli causes outbreaks of neonatal diarrhea in nurseries?
Which type of E.coli causes a syndrome identical to Shigellosis with profuse scant, bloody diarrhea and high fever?
Which type of E.coli causes a syndrome identical to Shigellosis with profuse scant, bloody diarrhea and high fever?
Which strain of E.coli causes hemolytic-uremic syndrome (HUS) and kidney failure due to shiga (like) toxin?
Which strain of E.coli causes hemolytic-uremic syndrome (HUS) and kidney failure due to shiga (like) toxin?
Which type of E.coli is non-invasive and causes persistent watery diarrhea without fever?
Which type of E.coli is non-invasive and causes persistent watery diarrhea without fever?
What is the main cause of gastrointestinal infections by Enteropathogenic E.coli (EPEC)?
What is the main cause of gastrointestinal infections by Enteropathogenic E.coli (EPEC)?
What are the symptoms associated with Enteropathogenic E.coli (EPEC) infection?
What are the symptoms associated with Enteropathogenic E.coli (EPEC) infection?
What is the main benefit of Enterobacteriaceae colonizing an infant's gastrointestinal tract?
What is the main benefit of Enterobacteriaceae colonizing an infant's gastrointestinal tract?
Study Notes
Characteristics of Enterobacteriaceae
- Enterobacteriaceae is a family of gram-negative bacteria
- Characterized by the ability to ferment lactose or other sugars
- Coliforms like Escherichia coli are primarily found in the gastrointestinal tract of warm-blooded animals
Characteristics of Escherichia coli
- A general characteristic of Escherichia coli is the ability to ferment lactose
- Coli can be classified into different types based on their pathogenic characteristics
- Enteropathogenic E. coli (EPEC) is one type that causes gastrointestinal infections
Types of E. coli
- ETEC (Enterotoxigenic E. coli) is known to cause 'traveler's diarrhea'
- EPEC (Enteropathogenic E. coli) causes outbreaks of neonatal diarrhea in nurseries
- EHEC (Enterohemorrhagic E. coli) causes a syndrome identical to Shigellosis with profuse, scant, bloody diarrhea and high fever
- EHEC is also responsible for hemolytic-uremic syndrome (HUS) and kidney failure due to shiga (like) toxin
- EAEC (Enteroaggregative E. coli) is non-invasive and causes persistent watery diarrhea without fever
Infections and Symptoms
- EPEC is the main cause of gastrointestinal infections in infants
- Symptoms of EPEC infection include watery diarrhea, vomiting, and fever
Colonization and Benefits
- The main benefit of Enterobacteriaceae colonizing an infant's gastrointestinal tract is the establishment of a healthy gut microbiome
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Description
Test your knowledge of Enterobacteriaceae family characteristics such as being Gram negative bacilli, primarily found in the colon, containing endotoxin, and having specific antigenic compositions. This quiz covers important features of organisms like Escherichia coli, Salmonella, and Shigella.
