Podcast
Questions and Answers
Which characteristic is true of Staphylococcus aureus?
Which characteristic is true of Staphylococcus aureus?
- It is part of the normal vaginal flora.
- It forms in grape-like clusters. (correct)
- It grows in the absence of bile salts.
- It is catalase-negative and coagulase-positive.
Which species of Staphylococcus can cause severe infections in immunosuppressed patients and those with central venous catheters?
Which species of Staphylococcus can cause severe infections in immunosuppressed patients and those with central venous catheters?
- Staphylococcus epidermidis (correct)
- Staphylococcus gallolyticus
- Staphylococcus aureus
- Staphylococcus saprophyticus
Which statement is true about Staphylococcus saprophyticus?
Which statement is true about Staphylococcus saprophyticus?
- It is a facultative anaerobic organism.
- It is catalase-negative and coagulase-positive.
- It is predominantly implicated in respiratory tract infections.
- It is a commensal of the skin. (correct)
What characteristic distinguishes Staphylococcus epidermidis from Staphylococcus aureus?
What characteristic distinguishes Staphylococcus epidermidis from Staphylococcus aureus?
Which species of Staphylococcus is predominantly implicated in genitourinary tract infections in sexually active young women?
Which species of Staphylococcus is predominantly implicated in genitourinary tract infections in sexually active young women?
What agar medium does Staphylococcus grow on in the presence of bile salts and 6.5% NaCl?
What agar medium does Staphylococcus grow on in the presence of bile salts and 6.5% NaCl?
Which mechanism allows Staphylococcus aureus to resist phagocytosis?
Which mechanism allows Staphylococcus aureus to resist phagocytosis?
What distinguishes Mycobacterium tuberculosis in terms of its cell wall components?
What distinguishes Mycobacterium tuberculosis in terms of its cell wall components?
How do bacterial coagulases contribute to the infection process?
How do bacterial coagulases contribute to the infection process?
What role does hyaluronidase play in the spread of microorganisms?
What role does hyaluronidase play in the spread of microorganisms?
Which bacterial component mediates attachment and helps resist phagocytosis?
Which bacterial component mediates attachment and helps resist phagocytosis?
Which enzyme helps microorganisms to spread by hydrolyzing hyaluronic acid?
Which enzyme helps microorganisms to spread by hydrolyzing hyaluronic acid?
Which enzyme breaks down the protein collagen, a major component of connective tissue?
Which enzyme breaks down the protein collagen, a major component of connective tissue?
What surface proteins do Salmonella and E.coli produce to alter actin filaments during host cell invasion?
What surface proteins do Salmonella and E.coli produce to alter actin filaments during host cell invasion?
What type of proteins are responsible for causing membrane ruffling in host cells during microbial invasion?
What type of proteins are responsible for causing membrane ruffling in host cells during microbial invasion?
Which molecules are used by pathogens to take iron away from iron transport proteins?
Which molecules are used by pathogens to take iron away from iron transport proteins?
What is the capacity of microorganisms to produce toxins known as?
What is the capacity of microorganisms to produce toxins known as?
Which is the most common way bacteria damage host cells according to the text?
Which is the most common way bacteria damage host cells according to the text?
