30 Questions
Which of the following bacteria is commonly found in the upper respiratory tract of approximately 5% of the population?
Klebsiella
Which bacteria is known to produce swarming colonies and a film of confluent growth?
Proteus spp.
Which bacteria is a common cause of urinary tract infections (UTI) and wound infections?
Proteus spp.
Which bacteria is known to have an antiphagocytic capsule and produce exotoxins, coagulase, and fibrinolysin?
Pseudomonas aeruginosa
Which bacteria is responsible for causing the plague and can be transmitted via rat flea bites, airborne droplets, or ingestion of contaminated animal tissue?
Yersinia pestis
Which disease is caused by a bacterium that cannot produce ATP and cannot survive outside an animal host cell?
Chlamydia psittaci
Which disease is the only rickettsial disease transmitted from animals to humans by inhalation?
Q fever
Which disease is characterized by chronic cardiovascular involvement and is often isolated from cattle, goats, and sheep?
Q fever
Which disease is the single most frequent bacterial sexually transmitted disease in the U.S., causing over 4 million cases per year?
Chlamydia trachomatis
Which disease is characterized by eye infections and can lead to blindness if not treated, usually contracted by infants and children through contact with an infected person?
Chlamydia trachomatis
Which of the following is the most virulent species of Staph bacteria?
Staphylococcus aureus
Which of the following is NOT a route of infection for Staphylococcus aureus?
Ingestion of bacteria or toxin
Which of the following is a virulence factor of Staphylococcus aureus?
Cytolytic toxins
Which of the following is a characteristic of Staphylococcus aureus infections?
They are surrounded by necrotic tissue
Which of the following is NOT a symptom of Staphylococcus aureus food poisoning?
Fever
Which of the following bacteria is associated with gram-negative enterotoxins directed against the gastrointestinal tract?
Shigella dysenteriae
Which of the following bacteria is the most common cause of gram-negative sepsis?
Klebsiella pneumoniae
Which of the following bacteria is associated with the most severe dysentery?
Shigella dysenteriae
Which of the following bacteria is commonly associated with urinary tract infections and pneumonia?
Klebsiella pneumoniae
Which of the following bacteria is associated with inflammation of the mucosa of the small and large intestine, resulting in nausea, headache, vomiting, profuse diarrhea, and low-grade fever?
Salmonella enterica
Which of the following is a major problem associated with Streptococcus pyogenes infections?
Rheumatic fever
Which of the following is a major cause of fatal bacterial meningitis in young adults?
Neisseria meningitidis
Which of the following is a major cause of pneumonia and meningitis?
Streptococcus pneumoniae
Which of the following is a major cause of ophthalmia neonatorium, an eye infection in newborns?
Neisseria gonorrhoeae
Which of the following is a major cause of purulent arthritis?
Neisseria gonorrhoeae
Which bacterial pathogen is the causative agent of bubonic and pneumonic plague?
Yersinia pestis
Which bacterial pathogen causes severe gastroenteritis, particularly in areas with contaminated water or improperly prepared food?
Vibrio cholerae
Which bacterial pathogen is an opportunistic pathogen commonly found in hospital environments, causing infections in burn wounds and respiratory tracts?
Pseudomonas aeruginosa
Which bacterial pathogen is the most common cause of gastroenteritis worldwide, with self-limiting symptoms that resolve in 3-6 days?
Campylobacter jejuni
Which bacterial pathogen causes leptospirosis in humans, transmitted through contact with infected animal urine?
Leptospira
Study Notes
Summary of Bacterial Pathogens
- Yersinia pestis is the causative agent of bubonic and pneumonic plague, with mortality rates nearing 100%.
- Vibrio cholerae is a gram-negative rod that causes severe gastroenteritis, particularly in areas with contaminated water or improperly prepared food.
- Pseudomonas aeruginosa is an opportunistic pathogen commonly found in hospital environments, causing infections in burn wounds and respiratory tracts.
- Campylobacter jejuni is the most common cause of gastroenteritis worldwide, with self-limiting symptoms that resolve in 3-6 days.
- Leptospira is a zoonotic bacteria that causes leptospirosis in humans, transmitted through contact with infected animal urine.
- Borrelia burgdorferi is the etiologic agent of Lyme disease, transmitted through the bite of Ixodes ticks.
- Treponema pallidum is the causative agent of syphilis, primarily transmitted through direct contact with an individual with an active syphilitic lesion.
- Mycoplasma pneumoniae is a bacteria that causes primary atypical pneumonia, commonly known as "walking pneumonia."
- Mycoplasma hominis is an opportunistic pathogen that causes urogenital tract diseases.
- Rickettsia species are obligate intracellular pathogens that spread through arthropod vectors.
- Rickettsia rickettsii causes Rocky Mountain Spotted Fever, with severe symptoms and a mortality rate of 20% if left untreated.
- Rickettsia typhi causes endemic typhus transmitted by rat fleas, while epidemic louse-borne typhus is caused by another Rickettsia species.
Test your knowledge of bacterial pathogens with this quiz! Learn about the causative agents of diseases like bubonic plague, cholera, pneumonia, and more. Challenge yourself to identify the bacteria responsible for various infections and their transmission methods.
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