MICROPARA QUIZZES 2

• What is the bacterial organelle used for motility?

  Flagella
• What is the role of fimbriae in bacteria?

  They mediate attachment to human cell surfaces
• What is sporulation in bacteria?

  Formation of resistant, dormant structures
• What type of bacteria contains mycolic acid in its cell wall?

  Acid-fast bacilli
• What is the structure responsible for the rigidity of the bacterial cell wall?

  Peptidoglycan
• Which bacteria contributes to tooth decay?

  Streptococcus mutans
• What is the thin proteinaceous appendage necessary for bacterial conjugation?

  Pilus
• Do human and fungal cells have similar ribosomes compared to bacterial ribosomes?

  Yes, they are similar
• Is prokaryotic genetic material enclosed in a nuclear membrane?

  No, it is not enclosed
• What cellular structure is crucial for classifying bacteria as Gram-positive or Gram-negative?

  Cell wall
• What are bacterial cell walls composed of?

  Peptidoglycan
• What dye is used to stain spores green?

  Malachite green
• What is the major difference between a spirochete and spirillum?

  Presence of flagella
• Which bacterium is associated with bacteremia, meningitis, and pneumonia in newborns?

  Staphylococcus aureus
• What systemic disease is caused by Staphylococcus?

  Toxic shock syndrome
• What is the causative agent of food poisoning and skin boils?

  Staphylococcus aureus
• Where is Staphylococcus aureus commonly found?

  Nose
• What does the coagulase test distinguish S. aureus from?

  Staphylococcus epidermidis
• What do most bacteria have that protects against phagocytosis?

  Capsules
• What is the appearance of S. aureus on mannitol salt agar?

  Golden yellow/yellow opaque colonies
• Which Staphylococcus species is coagulase negative?

  Staphylococcus epidermidis
• What is a key virulence factor produced by S. aureus?

  Coagulase
• What disease is caused by an epidermal toxin from S. aureus?

  Skin scalded syndrome
• What does MRSA stand for?

  Methicillin-resistant Staphylococcus aureus
• Name two common cutaneous infections caused by Staphylococcus aureus.

  Folliculitis, boils/furuncles
• What is the most common site of S. aureus colonization in adults?

  Nostril/nose
• What is the presentation of impetigo caused by S. aureus?

  Blisters or sores on face and neck
• Which species of Staphylococcus is considered pathogenic?

  Staphylococcus aureus
• What is the difference between MRSA and methicillin-sensitive S. aureus?

  MRSA is resistant to methicillin
• What is the causative agent of suppurative diseases like pharyngitis?

  Streptococcus pyogenes
• What group B Streptococcus causes neonatal meningitis?

  Streptococcus agalactiae
• What is the causative agent of pneumonia and meningitis in adults?

  Streptococcus pneumoniae
• Where is the source of the organism causing subacute bacterial endocarditis?

  Oropharynx
• What does the pneumococcal vaccine contain?

  Capsular polysaccharide of serotypes
• Can bacterial capsules be used in vaccines?

  Yes, they can be purified for vaccines
• What does the coagulase test distinguish?

  Streptococcus pyogenes from E. faecalis
• Which organism is NOT recognized as a cause of diarrhea?

  Streptococcus pyogenes
• What complication follows infection by S. pyogenes?

  Acute glomerulonephritis
• What is the most common antibiotic for treating S. pyogenes infections?

  Penicillin G
• Which group of Streptococcus causes neonatal infections?

  Group B