Microbiology Quiz: Streptococcus & Enterococcus

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Which characteristic is NOT associated with Streptococcus spp. and Enterococcus spp.?

Gram positive cocci

Catalase positive (correct)

Facultatively anaerobic

Nonmotile

What is a common symptom of rheumatic fever?

Proteinuria

Fever (correct)

Hypertension

Hematuria

S.pneumoniae is primarily associated with which of the following infections?

Rheumatic fever

Acute glomerulonephritis

Otitis media (correct)

Polyarthritis

Which of the following Streptococcus species is known for its beta-hemolytic pattern?

S.pyogenes Signup and view all the answers

What type of infection does 'flesh-eating bacteria' commonly refer to?

Necrotizing fasciitis Signup and view all the answers

Which of the following is NOT a typical cause of otitis media?

Staphylococcus aureus Signup and view all the answers

What is a primary characteristic of Enterococcus spp.?

Nonmotile Gram positive cocci Signup and view all the answers

What type of hemolysis is characteristic of viridans streptococci?

Alpha-hemolytic Signup and view all the answers

What condition is characterized by a superficial blister covered with pus or a honey-colored crust?

Impetigo Signup and view all the answers

Which of the following methods is NOT commonly used for laboratory diagnosis of skin infections?

Blood smear analysis Signup and view all the answers

What is a common characteristic of Erysipelas?

It presents as acute superficial cellulitis. Signup and view all the answers

Which test is used to assess antibodies for respiratory disease in laboratory diagnoses?

ASO titer Signup and view all the answers

Which of the following conditions typically follows surgical wounds or trauma?

Sepsis Signup and view all the answers

What is a feature of Necrotizing fasciitis?

It is highly virulent. Signup and view all the answers

Which of the following organisms is associated with chronic otitis media in children?

Alloiococcus otitidis Signup and view all the answers

What type of infection can be characterized by high fever alongside purulent exudates?

Pharyngitis Signup and view all the answers

What is the appearance of Bacillus anthracis colonies on agar?

Dry and irregular with a ground glass look Signup and view all the answers

Which of the following characteristics is NOT associated with Bacillus anthracis?

It is catalase negative Signup and view all the answers

What type of environments are Bacillus species primarily associated with for causing disease?

Wild and domestic herbivore populations Signup and view all the answers

What kind of infections are associated with the handling of animal products like hides and hair?

Respiratory infections from endospores Signup and view all the answers

Which toxin is identified as a virulence factor of Bacillus anthracis?

Lethal Toxin (LT) Signup and view all the answers

What symptoms can Bacillus anthracis infections lead to in humans?

Diarrhea and abdominal pain Signup and view all the answers

Why is penicillin indicated in the treatment of Bacillus anthracis infections?

Bacillus anthracis is sensitive to penicillin Signup and view all the answers

What type of hemolysis is associated with streptolysin O produced by S.pyogenes?

Beta hemolysis Signup and view all the answers

Which virulence factor helps Listeria monocytogenes escape the phagosome?

Listeriolysin O Signup and view all the answers

What is the role of the bacterial surface protein Act A?

Induces host cell actin polymerization Signup and view all the answers

Which of the following tests is positive for identifying Listeria monocytogenes?

CAMP test Signup and view all the answers

What is the purpose of cold enrichment in the recovery of Listeria monocytogenes?

To enhance growth of L. monocytogenes Signup and view all the answers

Which characteristic indicates Listeria monocytogenes has a narrow zone of B-hemolysis?

Fermentation of glucose Signup and view all the answers

What does the positive Voges-Proskauer test indicate about Listeria monocytogenes?

Production of acetoin Signup and view all the answers

What challenge is faced when isolating Listeria monocytogenes from placental tissues?

High concentration of normal flora Signup and view all the answers

Which of these factors does NOT contribute to the virulence of Listeria monocytogenes?

High antibiotic susceptibility Signup and view all the answers

What is a clinical indicator for enhanced recovery of Listeria monocytogenes?

Isolation from normally sterile sites Signup and view all the answers

Which method is NOT typically used for the presumptive identification of Listeria monocytogenes?

Blood agar culture Signup and view all the answers

What is a notable characteristic of C. jeikeium and C. urealyticum?

Resistance to multiple antibiotics Signup and view all the answers

Which of the following is a potential consequence of listeriosis?

Meningitis and bacteremia Signup and view all the answers

What is the significance of the Listeriolysin O (hly gene) in clinical diagnostics?

It indicates the presence of Listeria monocytogenes. Signup and view all the answers

What is recommended for the storage of leftover ready-to-eat food items?

Heat before consumption and limit storage duration. Signup and view all the answers

Which characteristic can lead to misidentification of bacteria in the API CORYNE STRIP method?

Generation of an incorrect code Signup and view all the answers

What kind of isolation is acceptable for diagnosing a urinary tract infection if present as pure culture?

Isolation from urine Signup and view all the answers