Podcast
Questions and Answers
Which of the following staphylococci is often termed 'coagulase negative staphylococci'?
Which of the following staphylococci is often termed 'coagulase negative staphylococci'?
- S. epidermidis (correct)
- S. saprophyticus
- S. aureus
- S. xylosus
What method is used to demonstrate the presence of coagulase in staphylococci by mixing plasma with a suspension of bacteria?
What method is used to demonstrate the presence of coagulase in staphylococci by mixing plasma with a suspension of bacteria?
- DNase production test
- Slide coagulase test
- Protein A detection test
- Tube coagulase test (correct)
Which enzyme is possessed by S. aureus but rarely by other staphylococci?
Which enzyme is possessed by S. aureus but rarely by other staphylococci?
- DNase (correct)
- Coagulase
- Hemolysin
- Protein A
What characteristic is used for differentiating between S. saprophyticus and S. epidermidis?
What characteristic is used for differentiating between S. saprophyticus and S. epidermidis?
Which staphylococcus possesses a cell-wall antigen known as protein A?
Which staphylococcus possesses a cell-wall antigen known as protein A?
What test is a more rapid and simple method for detecting the presence of coagulase in staphylococci?
What test is a more rapid and simple method for detecting the presence of coagulase in staphylococci?
Which body part is MOST commonly colonized by S. aureus in healthy adults?
Which body part is MOST commonly colonized by S. aureus in healthy adults?
What is the Gram staining characteristic of S. aureus when observed under the microscope?
What is the Gram staining characteristic of S. aureus when observed under the microscope?
Which enzyme produced by S. aureus interferes with phagocytosis and enhances tissue invasion?
Which enzyme produced by S. aureus interferes with phagocytosis and enhances tissue invasion?
What is the function of MSCRAMMs in S. aureus?
What is the function of MSCRAMMs in S. aureus?
Which biochemical test is NOT typically used for full identification of S. aureus?
Which biochemical test is NOT typically used for full identification of S. aureus?
What is the primary route of spread for S. aureus according to the text?
What is the primary route of spread for S. aureus according to the text?
Which characteristic is used to further divide medically important bacteria into groups besides cell shape and staining reactions?
Which characteristic is used to further divide medically important bacteria into groups besides cell shape and staining reactions?
Which of the following is a Gram-positive bacterium that is usually associated with humans and is considered clinically important?
Which of the following is a Gram-positive bacterium that is usually associated with humans and is considered clinically important?
What is the colonial morphology of Staphylococcus saprophyticus like?
What is the colonial morphology of Staphylococcus saprophyticus like?
Which of the following characteristics is NOT true of Staphylococci?
Which of the following characteristics is NOT true of Staphylococci?
What is the optimum temperature for the growth of Staphylococci?
What is the optimum temperature for the growth of Staphylococci?
In what kind of media do Staphylococci typically grow?
In what kind of media do Staphylococci typically grow?
