Staphylococcus Aureus and Enterotoxin B
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Questions and Answers

Which pathogen is associated with Whooping cough?

  • Bacillus anthracis
  • Bacteroides fragilis
  • Bordetella pertussis (correct)
  • Borrelia burgdorferi

What is the shape of Bordetella pertussis?

  • Coccobacilli (correct)
  • Bacilli
  • Spirochaetes
  • None of the above

Which pathogen is commonly known as the livestock pathogen that can also infect humans through different routes?

  • Chlamydia psittaci
  • Bacillus anthracis (correct)
  • Campylobacter jejuni
  • Burkholderia spp

Which pathogen causes molecular mimicry leading to systemic lupus and erythematosus?

<p>Burkholderia spp (D)</p> Signup and view all the answers

What is the natural habitat of Vibrio cholerae?

<p>Brackish water (C)</p> Signup and view all the answers

Which of the following is a symptom of cholera caused by Vibrio cholerae?

<p>Rice-water stools (D)</p> Signup and view all the answers

What is the mechanism of action of Cholera Toxin on epithelial cells?

<p>Causes endocytosis and affects Golgi and ER (D)</p> Signup and view all the answers

Which type of waterborne infection is associated with Yersinia Pestis?

<p>Plague (B)</p> Signup and view all the answers

What did ancient DNA analysis help in studying regarding Yersinia Pestis?

<p>Causative agent of plague (A)</p> Signup and view all the answers

Which component of Cholera Toxin leads to increased Cl- efflux and decreased Na+ influx in cells?

<p>[AMP] (C)</p> Signup and view all the answers

Which bacterial species is known to cause colitis and is a major cause of hospital-acquired infections?

<p>Clostridioides difficile (D)</p> Signup and view all the answers

What is the mechanism of action of the toxin produced by Corynebacterium diphtheriae?

<p>Protein synthesis inhibition (D)</p> Signup and view all the answers

Which bacterium causes food poisoning and gas gangrene, producing more than 20 exotoxins?

<p>Clostridium perfringens (B)</p> Signup and view all the answers

Which bacterial species is associated with bacterial vaginosis?

<p>Gardnerella vaginalis (C)</p> Signup and view all the answers

What is the primary method of treatment for Clostridioides difficile infection?

<p>Antibiotics (A)</p> Signup and view all the answers

In which part of the body does Corynebacterium diphtheriae typically cause infection?

<p>Respiratory tract (A)</p> Signup and view all the answers

What process leads to the conversion of reticulate bodies (RBs) back to infectious extracellular bodies (EBs) in Chlamydia infection?

<p>Actin remodeling (D)</p> Signup and view all the answers

Which bacterial species is linked to acne as a top skin species?

<p>Cutibacterium acnes (C)</p> Signup and view all the answers

Which bacterial species is known to survive inside immune cells, particularly macrophages?

<p>Proteobacter (C)</p> Signup and view all the answers

Which bacterium is considered an obligate intracellular pathogen?

<p>Mycobacterium leprae (C)</p> Signup and view all the answers

Which bacterial species is associated with Leprosy?

<p>Mycobacterium leprae (A)</p> Signup and view all the answers

Which bacterial genus is known for causing atypical pneumonia and is specifically linked to Legionnaire's disease?

<p>Proteobacter (B)</p> Signup and view all the answers

Which bacterial species is known for causing periodontal disease and is associated with top genera in lung and oral microbiota?

<p>Prevotella intermedia (B)</p> Signup and view all the answers

Which of the following bacteria is involved in opportunistic nosocomial pneumonia and sepsis?

<p>Pseudomonas aeruginosa (A)</p> Signup and view all the answers

Which Firmicutes bacterium is commonly associated with skin infections, sinusitis, and food poisoning?

<p>Staphylococcus aureus (C)</p> Signup and view all the answers

Which bacterial species converts urea to ammonia due to its urease activity?

<p>Proteus mirabilis (D)</p> Signup and view all the answers

Which bacterium is associated with typhoid fever and is known for a polysaccharide capsule that inhibits phagocytosis?

<p>Salmonella enterica (D)</p> Signup and view all the answers

Which bacterial species is responsible for membrane ruffling and trigger mechanisms using T3SS in host cells?

<p>Salmonella Typhimurium (B)</p> Signup and view all the answers

Which bacteria are part of the top genera in lung and oral microbiota?

<p>Prevotella intermedia (B)</p> Signup and view all the answers

Which bacterial genus is associated with swarming motility due to the presence of 4-10 flagella?

<p>Proteus mirabilis (D)</p> Signup and view all the answers

Which bacteria are involved in causing urinary tract diseases and can lead to kidney stones?

<p>Proteus mirabilis (C)</p> Signup and view all the answers

Which bacterium among the given options causes periodontal disease?

<p>Prevotella intermedia (A)</p> Signup and view all the answers

Which of the following bacteria are known for causing slow-forming infections like sinusitis?

<p>Staphylococcus aureus (B)</p> Signup and view all the answers

Which Firmicutes bacterium is a usual member of the microbiota and is commonly found on the skin?

<p>Staphylococcus aureus (A)</p> Signup and view all the answers

What is the first step in Chlamydia infection after extracellular bodies (EBs) bind to host cell receptors?

<p>Chlamydia-induced actin remodeling (A)</p> Signup and view all the answers

Which treatment method for Clostridioides difficile infection has a potential risk of antibiotic resistance?

<p>Fecal matter transplant (FMT) (C)</p> Signup and view all the answers

What characteristic differentiates Clostridioides difficile from other bacteria of the Firmicutes phylum?

<p>Production of spores (D)</p> Signup and view all the answers

Which toxin produced by Clostridium perfringens leads to gas gangrene?

<p>α-toxin (D)</p> Signup and view all the answers

What is the major cause of hospital-acquired infections known as a superbug from the Firmicutes phylum?

<p>Clostridioides difficile (C)</p> Signup and view all the answers

Which bacterium is classified under Firmicutes and is associated with food poisoning as well as causing more than 20 exotoxins?

<p>Clostridium perfringens (C)</p> Signup and view all the answers

What is the mechanism of action of Diphtheria Toxin produced by Corynebacterium diphtheriae?

<p>&quot;Transfers ADP-Ribose moiety from cellular NAD+ to intracellular host proteins&quot; (B)</p> Signup and view all the answers

Which pathogen associated with bacterial vaginosis belongs to the Actinobacteria phylum?

<p>Gardnerella vaginalis (A)</p> Signup and view all the answers

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