Streptococcus

Question 1

Streptococcus are gram _____ bacteria

Answer 1

Positive

Question 2

What is the motility of Streptococcus?

Answer 2

Non motile

Question 3

Are Streptococcus capsulated or not?

Answer 3

Capsulated

Question 4

What is the oxygen requirement of Streptococcus?

Answer 4

Facultative anaerobes

Question 5

What is the catalase test result of Streptococcus?

Answer 5

Catalase negative

Question 6

What Streptococcus group is classified using the Lancefield classification?

Answer 6

Beta-hemolytic Streptococci

Question 7

What substance is used in Lancefield classification?

Answer 7

C carbohydrate antigen

Question 8

What is the appearance of Streptococcus under the microscope?

Answer 8

Spherical cocci in chains or pairs

Question 9

Streptococcus needs what typee of nutrient requirements?

Answer 9

They need enrichment with blood and serum.

Question 10

Streptococcus grows well in?

Answer 10

Milk, produces lactic acid

Question 11

In Sherman Classification These are Streptococcus Pathogenic species that produce pus.

Answer 11

Pyogenic

Question 12

In Sherman Classification These are Streptococcus sp. that are Alpha/green hemolysis on blood agar.

Answer 12

Viridans

Question 13

In Sherman Classification These are Streptococcus sp. that are associate with milk

Answer 13

Lactic Group

Question 14

In Sherman Classification These are Streptococcus sp. affecting the intestine.

Answer 14

Enterococcus

Question 15

Carbohydrate or polysaccharide antigen is found in?

Answer 15

he cell wall or between the cell wall and membrane (teichoic acid)

Question 16

What virulence of Streptococcus interferes with phagocytosis

Answer 16

Hyaluronic acid

Question 17

Responsible for virulence; inhibits phagocytosis and has immunotoxic effects on polymorphs and platelets. [inhibits opsonization]

Answer 17

Protein M

Question 18

What toxins are responsible for beta hemolysis in Streptococcus?

Answer 18

Streptolysins O and S.

Question 19

What is a good indicator of present or past Streptococcus infection?

Answer 19

Antibodies to Streptolysin O.

Question 20

What cells are toxic targets of Streptolysins O and S?

Answer 20

Neutrophils and macrophages.

Question 21

Toxin which is a protein and elicits neutralizing antibodies

Answer 21

Streptolysin O

Question 22

Toxin which is a peptide and non-antigenic.

Answer 22

Streptolysin S

Question 23

What Causes rashes in scarlet fever. Group A Streptococcus?

Answer 23

erythrogenic toxin

Question 24

Who Promotes the spread of infection in tissues of Streptococcus?

Answer 24

Hyaluronidase

Question 25

What does NADase do in Group A Streptococcus

Answer 25

Kills phagocytes.

Question 26

Has broad substrate specificity n Group A Streptococcus?

Answer 26

proteinase

Question 27

What species of Streptococcus is found in infected udder

Answer 27

Streptococcus agalactiae

Question 28

Streptococcus agalactiae on solid medium containing starch shows what color?

Answer 28

Brick red growth

Question 29

What test is used to identify Streptococcus agalactiae

Answer 29

CAMP test

Question 30

CAMP test means

Answer 30

Christie, Atkins, Munch-Petersen

Question 31

What causes Acute, severe mastitis

Answer 31

Streptococcus dysagalactiae

Question 32

Lancefield group C.

Answer 32

Streptococcus dysagalactiae

Question 33

Often produces a distinct greenish discoloration.

Answer 33

Streptococcus dysagalactiae

Question 34

Normal commensal of the skin and upper respiratory tract, tonsils and lymphoid tissues of the horse.

Answer 34

Streptococcus zooepidemicus

Question 35

Most common cause of wound infection in horses.

Answer 35

Streptococcus zooepidemicus

Question 36

Secondary invader of viral infections of URT of foals and young horses.

Answer 36

Streptococcus zooepidemicus

Question 37

Responsible for Bovine Mastitis

Answer 37

Streptococcus uberis

Question 38

Closely related to S. zooepidemicus.

Answer 38

Streptococcus equisimilis

Question 39

Most common cause of suppurative arthritis in pigs

Answer 39

Streptococcus equisimilis

Question 40

Responsible for Tonsillar tissues and draining lymph nodes.

Answer 40

Streptococcus equisimilis

Question 41

Causes strangles in horses

Answer 41

Streptococcus equi

Question 42

Outer surface of organism with peach fuzz-like coating of protein under electron microscope.

Answer 42

Streptococcus equi

Question 43

Oxygen-sensitive streptolysin O-like hemolysin produces wide zone of

Answer 43

B-hemolysis

Question 44

Obligate parasite of family Equidae.

Answer 44

Streptococcus equi

Question 45

formation of abscesses in thorax and abdomen caused by Streptococcus equi

Answer 45

Bastard strangles