Vet Microbiology Staph

Question 1

Staphylococcus are gram what?

Answer 1

They are gram positive

Question 2

______ give grape like irregular clusters

Answer 2

Staphylococcus

Question 3

What is the selective media for staphylococcus

Answer 3

Mannitol salt agar

Question 4

Staphylococcus aureus are _____ fermenter

Answer 4

Mannitol

Question 5

Staphylococcus saprophyticus are - - - - - fermenters

Answer 5

Non mannitol

Question 6

On macConkey medium staph is What color? They are __

Answer 6

Pinkish, they are non lactose fermenters

Question 7

On macConkey medium staph is What color? They are __

Answer 7

Pinkish, they are non lactose fermenters

Question 8

HHCCLA explain this extracellular products of medical importance in staph

Answer 8

Heat stable nuclease
Haemolysin
Catalase
Coagulase
Leucocidin
Adhesins.

Question 9

HHCCLA explain this extracellular products of medical importance in staph

Answer 9

Heat stable nuclease
Haemolysin
Catalase
Coagulase
Leucocidin
Adhesins.

Question 10

What is peculiar about Catalase

Answer 10

It is produced by staph instead of streptococcus, it breaks down h202 to water and oxygen

Question 11

Is Catalase produced by streptococcus

Answer 11

No it’s in staphylococcus and it breaks down h202

Question 12

What’s the role of Coagulase in preventing infection

Answer 12

It coats the surface of the organism with fibrin thereby preventing phagocytosis

Question 13

Staphylococcus and strept cause what in cattle

Answer 13

Mastitis

Question 14

In poultry it causes

Answer 14

Dermatitis also know as bumble foot, bacteramia, osteomyelitis, arthritis or synoviitis

Question 15

What are the samples used to test staph

Answer 15

Aspirate from absess, blood, nasal swab, affected tissues or milk

Question 16

What are the samples used to test staph

Answer 16

Aspirate from absess, blood, nasal swab, affected tissues or milk

Question 17

Gram stain of the specimen

Answer 17

Gram + with cocci in pairs, single or chain

Question 18

Staph can also grow in ___. Agar to give different colored colonies

Answer 18

Blood agar

Question 19

Staph can also grow in ___. Agar to give different colored colonies

Answer 19

Blood agar

Question 20

There may be __ haemolysis on blood agar

Answer 20

Beta - complete haemolysis

Question 21

There may be __ haemolysis on blood agar

Answer 21

Beta - complete haemolysis

Question 22

What does color mannitol fermenters give ___ and non give

Answer 22

Non give my favorite color purple…
Fermenters give yellowish

Question 23

What does color mannitol fermenters give ___ and non give

Answer 23

Non give my favorite color purple…
Fermenters give yellowish

Question 24

On macConkey staph are __ fermenter with which color

Answer 24

Lactose, pink

Question 25

On macConkey staph are __ fermenter with which color

Answer 25

Lactose, pink

Question 26

Baird Parker medium gives which color of colonies

Answer 26

Shiny black colonies

Question 27

Which strain of staphylococcus produce Coagulase.. List 3

Answer 27

S.aureus,S,intermedius, S. hycicus

Question 28

The Catalase test differentiate staph from strept which are Catalase +

Answer 28

True

Question 29

Name a disease staph produce in cattle, broiler, pig and dog

Answer 29

Cattle : mastitis
Broiler, dermatitis (bumble foot), arthritis, osteomyelitis, lameness due to staph is of high economic importance
Pig Exudative epidermitis( greasy pig disease)
Dog pyoderma