Micro- Staphylococcus + cocci

Question 1

Grow in clusters, and reproduce in the presence of oxygen

Answer 1

staphylococcus species

Question 2

T/F: Staphylococcus are normal flora

Answer 2

True

Question 3

The 2 classes of staphylococcus species

Answer 3

-Coagulase Negative staphylococci
-Coagulase positive staphylococci (staphylococcus aureus

Question 4

Pathogenesis of staphylococcus aureus

Answer 4

-Cause soft tissue infection
-And soft tissue abscess

Question 5

The test used to differentiate the 2 classes of staphylococci

Answer 5

coagulase test

Question 6

Diseases caused by coagulase negative staphylococci

Answer 6

• Staphylococci epidermidis ( most common species causing infection)
• Staphylococci haemolyticus ( 2nd most common species to cause infection)
• S. Saprophyticus ( cause UTI on esp on sexually active females)
• S. lugdunensis

Question 7

Maybe be a colonizer (usually not) of anterior nares, axilla, and perineum

Answer 7

S.aureus

Question 8

Is a universal colonizer of all skin

Answer 8

Coagulase negative staphylococcus

Question 9

Staphylococcus Aureus virulence factors

Answer 9

-Hyaluronidase
- Leucocidin (creates pores or holes)
-Coagulase
-Haemolysin (RBC lysis for nutrient acquisition)

Question 10

Saphylococcus

Answer 10

gram positive cocci