Microbiology

Question 1

The primary biochemical test used to differentiate the genus straphylococcus from the genus streptococcus is

Answer 1

Catalase

Question 2

All species of staphylococcus species can be differentiated between species using

Answer 2

Catalase

Question 3

Staphylococcus species is

Answer 3

Aerobic facultatively anaerobic

Question 4

Cocci are grape-like clusters (straphylo-arrangement)

Answer 4

Strahylococcus species

Question 5

Can grow in 5-10% of NaCl2 moderately hapophilic. Can be exploited both in selective growth media and diagnostically in different growth media

Answer 5

Straphylococcus Species

Question 6

Capsule of groups A streptococci is comprised of a series of

Answer 6

Sugar that are not immunogenic and prevent phagocytosis

Question 7

Gold to yellow colonies by virtue of carotenoids pigment production

Answer 7

Straphylococcus auerus

Question 8

Coagulase positive able to coagulate plasma

Answer 8

Straphylococcus auerus

Question 9

Surface protein that adhere to host matrix proteins (spa) binds to Fc receptors of immunoglobulins-IgG1, IgG2, and IgG4. Fibronectin- binding protein A binds fibronectin

Answer 9

Straphylococcus auerus

Question 10

Protein A is one of the more important straphylococcus virulence factor that interferes with the host immune response by inhibiting the normal function of

Answer 10

IgG

Question 11

Hemolysis Beta hemolytic on blood agar complete hemolysis.

Answer 11

Straphylococcus auerus

Question 12

S epidermisdis is gamma hemolytic

Answer 12

No hemolysis

Question 13

What production of these would help differentiate between s. aureus and s. Epidermis is

Answer 13

Aureus catalase positive, carotenoids pigment, protein A

Question 14

Describe the epidemiology, spread and damage cause. Identify the common symptoms generalize straph infection and oral abscesses.

Answer 14

Normally human flora and skin and mucosal surfaces basic human habitats is the anterior nares

Question 15

What production of these would help differentiate between s. aureus and s. Epidermis is

Answer 15

s. Epidermis’s negative

Question 16

Describe the epidemiology, spread and damage cause. Identify the common symptoms generalize straph infection and oral abscesses.

Answer 16

Person a person spread through direct contact or exposure to contaminated fomites. Most infections are with the patient own organism. The organism are ubiquitous so there are no ubiquitous so there are no geographic or seasonal limitation

Question 17

Describe the epidemiology, spread and damage cause. Identify the common symptoms generalize straph infection and oral abscesses.

Answer 17

Entry
Don’t usually penetrate deep issues unless the skin or mucous membranes are damaged or cut.
Poor hygiene or prolonged moisture of the skin- permits the growth of large numbers of organisms