Gram- Positive Cocci, Catalase Positive

Question 1

Catalase- producing, gram-positive cocci, non motile, non-spore forming, aerobic, “Bunch of grapes”. Colonies are cream-colored white or rarely light gold, and “buttery looking”

Answer 1

Staphylococcus

Question 2

Gram positive cocci, catalase positive most clinically significant species of staphylococci

Answer 2

Staphylococcus aureus

Question 3

Are Heat stable endotoxin that cause various, symptoms, including diarrhea and vomitting

Answer 3

Endotoxin

Question 4

Cause nearly all cases of menstruating associated toxic shock syndrom

Answer 4

Toxic Shock Syndrom Toxin 1

Question 5

it is also known as epidermolytic toxin. it causes the epidermal layer of the skin to slough off and is known to cause staphylococcal scalded skin syndrom

Answer 5

Exfoliative toxin

Question 6

in addition to lysing erythrocytes, it also damage platelets and macrophages and cause severe tissue damage

Answer 6

Alpha hemolysins

Question 7

Acts on the sphingomyelin in the plasma membrane of erythrocytes

Answer 7

beta hemolysins

Question 8

causes bacterial cells to agglutinate in plasma

Answer 8

staphylocoagulase

Question 9

Hydrolyzes hyaluronic acid

Answer 9

Hyaluronidase

Question 10

Acts on lipids present on the surface of the skin, particularly fats and oil secreted by the sebaceaous glands

Answer 10

Lipases

Question 11

it has the ability to bind the Fc portion of immunoglobulin igG

Answer 11

protein A

Question 12

Is a relatively mild inflammation of a hair follicle or oil gland, the infected area is raised and red

Answer 12

Folliculitis

Question 13

it is an extension of folliculitis, are large, raised, superficial, abscesses

Answer 13

furuncles

Question 14

Occur when larger, more invasive lesions develop from multiple furuncles

Answer 14

Cabuncles

Question 15

Causes staphylococcal pustules that are large and surrounded by a small zone of erythema

Answer 15

Bullous impetigo

Question 16

• It is a bullous exfoliative dermatitis that occurs primarily
  in newborns and previously healthy young children

Answer 16

Scalded Skin snydrom

Question 17

• It is a rare but potentially fatal, multisystem disease
  characterized by a sudden onset of fever, chills, vomiting, diarrhea, muscle
  aches, and rash, which can quickly progress to hypotension schock

Answer 17

toxic shock syndrom

Question 18

-It is most commonly drug induced, but some cases
have been linked to infections and vaccines

Answer 18

Toxic Epidermal Necrolysis

Question 19

• Enterotoxin A and B have been associated with gastrointestinal
  disturbances

Answer 19

Food Poisoning-

Question 20

infections are predominantly hospital acquired, Instrumentation procedures such as catheterization,
medical implantation and immunosuppressive therapy
 It is a common cause of healthcare-acquired UTIs

Answer 20

Staphylococcus epidermidis

Question 21

It has been associated with UTIs in young women

Answer 21

Staphylococcus saprophyticus

Question 22

It can cause both community-associated and hospital acquired infections

Answer 22

Staphylococcus lugdunensis

Question 23

is a proprietary selective and differential medium for
isolation and identification of S. aureus

Answer 23

CHROMagar Staph aureus

Question 24

colonies are usually small – to medium sized, nonhemolytic gray
to white colonies

Answer 24

Staphylococcus epidermidis

Question 25

forms slightly larger colonies with about 50% of the strains producing yellow pigment

Answer 25

Staphylococcus saphrophyticus

Question 26

produces medium-sized colonies, with moderate or weak hemolysis and variable pigmentation

Answer 26

Staphylococcus heamolyticus

Question 27

can be used to differentiate S. aureus (negative) from S. lugdunensis, S. intermedius and S. schleiferi (positive)

Answer 27

pyrrolidonyl arylamidase activity