Podcast
Questions and Answers
What is a characteristic of Streptococcus species that grow both at 45°C and 37°C but not at 10°C?
What is a characteristic of Streptococcus species that grow both at 45°C and 37°C but not at 10°C?
- They may have A, C, G, or N antigen. (correct)
- They are part of the Lancefield group.
- They are β-hemolytic.
- They are normal biota in the lower respiratory tract.
Which Streptococcus species is non-hemolytic with Lancefield N antigen and is found in dairy products?
Which Streptococcus species is non-hemolytic with Lancefield N antigen and is found in dairy products?
- S. lactis (correct)
- S. mutans
- S. salivarius
- S. anginosus
How can Enterococci spp. be classified based on Smith & Brown's classification?
How can Enterococci spp. be classified based on Smith & Brown's classification?
- Based on their Lancefield group resistance.
- Based on their growth temperature preferences.
- Based on the color of the RBC around colonies. (correct)
- Based on their ability to cause alpha-hemolysis.
Which Streptococcus species is associated with green streptococci and is part of the normal fecal flora?
Which Streptococcus species is associated with green streptococci and is part of the normal fecal flora?
What distinguishes β-hemolytic Streptococcus species from other groups?
What distinguishes β-hemolytic Streptococcus species from other groups?
Why might some Streptococcus species be able to withstand temperatures above 60°C?
Why might some Streptococcus species be able to withstand temperatures above 60°C?
Which virulence factor of Group A Streptococci is responsible for resisting phagocytosis and adherence to mucosal cells?
Which virulence factor of Group A Streptococci is responsible for resisting phagocytosis and adherence to mucosal cells?
Which adhesion molecule of Group A Streptococci mediates epithelial cell attachment?
Which adhesion molecule of Group A Streptococci mediates epithelial cell attachment?
What is the function of the Hyaluronic Acid Capsule of Group A Streptococci?
What is the function of the Hyaluronic Acid Capsule of Group A Streptococci?
Which Streptococcus serotype is most common in causing pharyngitis?
Which Streptococcus serotype is most common in causing pharyngitis?
How are Group A Streptococci mainly acquired?
How are Group A Streptococci mainly acquired?
What is the main function of the M Protein in Group A Streptococci?
What is the main function of the M Protein in Group A Streptococci?
What is the main function of streptokinase?
What is the main function of streptokinase?
Which hemolysin is oxygen stable and nonimmunogenic?
Which hemolysin is oxygen stable and nonimmunogenic?
What inhibits Streptolysin O (SLO)?
What inhibits Streptolysin O (SLO)?
What is the main function of Deoxyribonuclease (DNase)?
What is the main function of Deoxyribonuclease (DNase)?
What type of hemolysis does Streptolysin S (SLS) cause?
What type of hemolysis does Streptolysin S (SLS) cause?
What is the function of Streptodornase?
What is the function of Streptodornase?
What is the function of Streptococcal Pyrogenic Exotoxins (SPEs)?
What is the function of Streptococcal Pyrogenic Exotoxins (SPEs)?
Which bacterial toxin degrades protein and mediates rashes seen in scarlet fever?
Which bacterial toxin degrades protein and mediates rashes seen in scarlet fever?
What is the role of C5a peptidase in bacterial infections?
What is the role of C5a peptidase in bacterial infections?
How do Streptococcal Pyrogenic Exotoxins (SPEs) contribute to shock and organ failure?
How do Streptococcal Pyrogenic Exotoxins (SPEs) contribute to shock and organ failure?
What is the incubation period for bacterial pharyngitis or tonsillitis?
What is the incubation period for bacterial pharyngitis or tonsillitis?
Which type of streptococci grow as 'satellite colonies' around other bacteria?
Which type of streptococci grow as 'satellite colonies' around other bacteria?
What characteristic feature is shared by Streptococcus-like organisms Aerococcus, Gemella, Lactococcus, Leuconostoc, and Pediococcus?
What characteristic feature is shared by Streptococcus-like organisms Aerococcus, Gemella, Lactococcus, Leuconostoc, and Pediococcus?
Which Streptococcus-like organism is associated with infections similar to enterococci and streptococci?
Which Streptococcus-like organism is associated with infections similar to enterococci and streptococci?
Which Streptococcus-like organism does not produce acid from carbohydrates?
Which Streptococcus-like organism does not produce acid from carbohydrates?
Which Streptococcus-like organism resembles viridans streptococci on culture but microscopically is similar to staphylococci?
Which Streptococcus-like organism resembles viridans streptococci on culture but microscopically is similar to staphylococci?
Which Streptococcus-like organism is associated with infections such as sepsis, meningitis, bacteremia, and UTIs?
Which Streptococcus-like organism is associated with infections such as sepsis, meningitis, bacteremia, and UTIs?
'Abiotrophia' and 'Granulicatella' are formerly known as what?
'Abiotrophia' and 'Granulicatella' are formerly known as what?
Which Streptococcus-like organism is associated with wound infections?
Which Streptococcus-like organism is associated with wound infections?
'Aerococcus urinae' is associated with which of the following infections?
'Aerococcus urinae' is associated with which of the following infections?
