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Medical Bacteriology Questions and Answers 100% Pass

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Medical Bacteriology Questions and Answers 100% Pass What is the primary function of a bacterial capsule? It protects the bacterium from phagocytosis. Which bacteria are commonly responsible for causing urinary tract infections? Escherichia coli What is the Gram stain result of Staphy...

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  • December 9, 2024
  • 49
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Medical Bacteriology
  • Medical Bacteriology
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Medical Bacteriology Questions and
Answers 100% Pass

What is the primary function of a bacterial capsule?


✔✔It protects the bacterium from phagocytosis.




Which bacteria are commonly responsible for causing urinary tract infections?


✔✔Escherichia coli




What is the Gram stain result of Staphylococcus aureus?


✔✔Gram-positive cocci in clusters




What is the role of endotoxins in bacterial infections?


✔✔Endotoxins trigger an inflammatory response and can lead to septic shock.




What is the most common cause of bacterial pneumonia in adults?


✔✔Streptococcus pneumoniae




1

,Which test is used to differentiate between Staphylococcus aureus and Streptococcus species?


✔✔Catalase test




What is the typical shape of Escherichia coli under the microscope?


✔✔Gram-negative rods




What type of bacteria is responsible for tuberculosis?


✔✔Mycobacterium tuberculosis




What is the function of bacterial flagella?


✔✔Flagella enable the bacteria to move in response to environmental signals.




What bacterial species is the leading cause of wound infections in hospital settings?


✔✔Methicillin-resistant Staphylococcus aureus (MRSA)




Which bacteria is known for causing food poisoning due to contaminated poultry?


✔✔Salmonella enterica




2

,What is the main difference between Gram-positive and Gram-negative bacteria?


✔✔Gram-positive bacteria have a thick peptidoglycan layer, while Gram-negative bacteria have

a thinner peptidoglycan layer and an outer membrane.




Which bacterial genus is commonly found in the human gastrointestinal tract and is a major

cause of antibiotic-associated diarrhea?


✔✔Clostridium difficile




What is the result of a positive tuberculin skin test (TST)?


✔✔It indicates a previous or current tuberculosis infection.




What bacterium is the cause of Lyme disease?


✔✔Borrelia burgdorferi




What is the mechanism of action of penicillin in treating bacterial infections?


✔✔Penicillin inhibits bacterial cell wall synthesis.




3

, Which bacteria are primarily responsible for causing sexually transmitted infections such as

gonorrhea?


✔✔Neisseria gonorrhoeae




What is the characteristic feature of Gram-negative bacteria?


✔✔A thin peptidoglycan layer surrounded by an outer membrane containing

lipopolysaccharides.




Which bacteria are known to cause bacterial meningitis?


✔✔Neisseria meningitidis and Streptococcus pneumoniae




What is the significance of bacterial plasmids?


✔✔Plasmids carry genes that can confer resistance to antibiotics.




Which bacteria is known for causing the characteristic "rice-water stools" in cholera?


✔✔Vibrio cholerae




What type of bacteria is Clostridium botulinum?


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