Gram+cocci Flashcards
What allows S. Epidermidis to adhere to valves?
Polysaccharide slime
Production of what allows viridians streptococcus to cause dental caries?
Acid
Gram positive cocci in chains and do not show hemolysis on blood agar may cause ….?
Endocarditis
What is the virulence factor of Staphylococcus aureus?
Protein A
What is the virulence factor of streptococcus pneumonia?
Capsule
Which of the following is part of the normal flora in the skin?
Staphylococcus epidermidis
Which gram positive diplococcic causes meningitis?
S. pneumonia
which of the following protects the skin ?
Staphylococcus Spp.
what is the function of panton-valentine leucicidin in staphylococcus aureus ?
Lysis of PMN
What is the clumping factor in staphylococcus aureus involved in?
clot formation
What allows staphylococcus epidermidis to adhere to artificial heart valves, prosthesis, and catheters?
Polysaccharide slime (biofilm)
Which organism is highly found in the nose flora? * Final 2009
Staphylococcus aureus
taphylococcus epidermidis is considered part of the normal flora, however, it can cause many diseases in immunocompromised hosts. What is its virulence factor? Final 2009
Slime
A patient is suffering from bacterial pharyngitis. Lab results showed gram positive cocci. What is the likely cause?*Final 209
Streptococcus pyogenes
Which of the following is a cause of meningitis & septicemia in neonates?
S. Agalactiae
Which bacteria is the most likely cause of severe community acquired pneumonia? A-streptococcus pyrogens B- streptococcus agalactia C- streptococcus pneumonia D- enterococcus
C-streptococcus pneumonia
What is the clumping factor in staphylococcus aureus involved in?
clot formation
What allows staphylococcus epidermidis to adhere to artificial heart valves, prosthesis, and catheters?
Polysaccharide slime
What causes honeymoon disease?
Staphylococcus Saprophyticus
Production of which substance helps the adherence of viridian streptococci to dental enamel?
Carbohydrate
Which of the following contributes to persistence of s. aureus on foreign bodies?
A. Lipoteichoic acid
B. Peptidoglycan
C.Extracellar polysaccharides
Extracellar polysaccharides
What is produced Viridans streptococci to adhere to the heart valve? A. Acid B. Carbohydrate C. M protein D. Extracellular dextran
Extracellular dextran
Which of the following bacteria is found permanently on the skin?( FB2 2014 )
Staphylococcus
What is the test for differentiating between streptococcus & staphylococcus?(FINAL 2014 )
A) Catalase test
B) coagulase test
Catalase test
