STREPTOCOCCUS

Question 1

STREPTOCOCCUS CHARACTERISTICS

Answer 1

G (+) cocci in pairs/ in chains,
nonmotile
NSF
Catalase (-)
Facultative anaerobes
Oxidase (-)
growth is enhanced by blood, serum, or glucose

Question 2

Lancefield Classification
Group A

Answer 2

Streptococcus pyogenes
Beta Hemolysis

Question 3

Lancefield Classification
Group B

Answer 3

Streptococcus agalactiae
Beta Hemolysis

Question 4

Lancefield Classification
Group C

Answer 4

S. equisimilis
S. zooepidimicus
S. equi
S. dysagalactiae
Beta Hemolysis

Question 5

Lancefield Classification
Group D Enterococci

Answer 5

E. faecalis
E. faecium
E. durans
E. avium
Beta Hemolysis

Question 6

Lancefield Classification
Group D Non Enterococci

Answer 6

S. bovis
S. equinis
Beta Hemolysis

Question 7

Alpha Hemolytic Reaction

Answer 7

S. pneumoniae

Question 8

Alpha and Gamma Hemolytic Reaction

Answer 8

Virdans
Streptococci

Question 9

• Group A
• Beta hemolysis pattern
• Pathogenic to man acquired through
  droplets
• flesh-eating bacteria

Answer 9

STREPTOCOCCUS PYOGENES

Question 10

VIRULENCE FACTORS OF S. pyogenes

Answer 10

M protein
Protein F
Lipoteichoic Acid

Question 11

ENZYMES AND TOXINS THAT ARE
PRODUCED by S. pyogenes

Answer 11

Hemolysin
Streptolysin O
Streptolysin S
Deoxyribonuclease
Streptokinase
Hyaluronidase
Pyrogenic Toxins

Question 12

CLINICAL INFECTION of S. pyogenes

Answer 12

Pharyngitis/Strep throat
Impetigo
Scarlet fever
Cellulitis
Erysipelas
Necrotizing fasciitis
Streptococcal Toxic Shock Syndrome

Question 13

• Group B
• Beta hemolytic pattern
• Normal flora in the female genital urinary
  tract.
• Nosocomial transmitted but infects the
  fetus and infants

Answer 13

STREPTOCOCCUS AGALACTIAE

Question 14

VIRULENCE FACTORS OF S. agalactiae

Answer 14

Capsule
Hemolysin
CAMP factor
Neuraminidase
Dnase
Hyaluronidase
Hyaluronidase
Protease

Question 15

CLINICAL INFECTION of S. agalactiae

Answer 15

Pneumonia
Meningitis
Sepsis
Postpartum Infection
Osteomyelitis
UTI
Endocarditis

Question 16

• Beta hemolytic pattern
• Animal pathogen
• Have Streptokinase enzyme

Answer 16

GROUP C STREPTOCOCCI

Question 17

GROUP D STREPTOCOCCI
CLINICAL INFECTIONS

Answer 17

Wound infection
Endocarditis
UTI
Sepsis

Question 18

These are oropharyngeal commensals

Answer 18

S. mutans group
Salivarius
S. bovis
S. constellatus

Question 19

dental caries and sub-acute endocarditis

Answer 19

S. mutans

Question 20

• Pneumococcus
• Lancet or oval bullet shape
• Common isolate both as a pathogen and
  as a member of normal flora.

Answer 20

STREPTOCOCCUS PNEUMONIAE

Question 21

• Normal flora and pathogens in the
  respiratory tract.
• Colonies Appearance: Dome Shape
• In other book: Cone with ice cream

Answer 21

STREPTOCOCCUS PNEUMONIAE

Question 22

CLINICAL INFECTIONS IN STREPTOCOCCUS PNEUMONIAE

Answer 22

Bacterial lobarpneumonia
Bacteria meningitis in adults
Otitis media
Bacteremia
Endocarditis

Question 23

VIRULENCE FACTORS OF STREPTOCOCCUS PNEUMONIAE

Answer 23

Capsular
Polysaccharide
Hemolysin
Immunoglobulin A
Protease
Neuraminidase
Hyaluronidase

Question 24

BACITRACIN SUSCEPTIBILITY TEST RESISTANT

Answer 24

Group B. (S. agalactiae)

Question 25

BACITRACIN SUSCEPTIBILITY TEST SENSTIVE

Answer 25

Group A. (S. pyogenes)

Question 26

SULFAMETHOXAZOLETRIMETHROPRIM SUSCEPTIBILITY TEST RESISTANT

Answer 26

Group A. (S. pyogenes)

Question 27

SULFAMETHOXAZOLETRIMETHROPRIM SUSCEPTIBILITY TEST SENSTIVE

Answer 27

Group B. (S. agalactiae)

Question 28

The arrowhead hemolytic pattern results when
the organism is streak perpendicular to betahemolytic staphylococcus aureus.

Answer 28

CHRISTIE-ATKINS-MUNCH-PETERSON
(CAMP TEST)

Question 29

POSITIVE FOR CAMP TEST

Answer 29

“ARROWHEAD
HEMOLYSIS”
Group B. (S. agalactiae)

Question 30

NEGATIVE FOR CAMP TEST

Answer 30

NO ZONE OF HEMOLYSIS
Group A. (S. pyogenes)

Question 31

Hipurric acid is converted to glycine and benzoic
acid in the presence of enzyme hippuricase.
Ninhydrin added to glycine produces purple
color
The end product of the hippurate-hydrolysis test is purple color/deep purple color.

Answer 31

HIPPURATE HYDROLYSIS TEST

Question 32

POSITIVE FOR HIPPURATE HYDROLYSIS TEST

Answer 32

DEEP PURPLE COLOR
B. (S. agalactiae)

Question 33

NEGATIVE FOR HIPPURATE HYDROLYSIS TEST

Answer 33

YELLOW PINK
OR COLORLESS
A. (S. pyogenes)

Question 34

RESISTANT IN OPTOCHIN (TAXO P)

Answer 34

VIRIDANS STREPTOCOCCI

Question 35

SENSITIVE IN OPTOCHIN TAXO P

Answer 35

PNEUMOCOCCI

Question 36

2 KINDS of OPTOCHIN

Answer 36

1. 10 microgram disks
2. 6 microgram disks

Question 37

more concentration of
antibiotics
- Zone of inhibition: at least 14 mm

Answer 37

10 microgram disks

Question 38

• Zone of inhibition: 10 mm

Answer 38

6 microgram disks

Question 39

Greater 14 ml zone on inhibition

Answer 39

SUSCEPTIBLE/SENSITIVE
(STREPTOCOCCUS PNEUMONIA)

Question 40

SUSCEPTIBLE/SENSITIVE
(STREPTOCOCCUS PNEUMONIA)

Answer 40

RESISTANT (VIRIDANS STREPTOCOCCI)

Question 41

 For capsular swelling
 S. pneumoniae has capsule- POSITIVE

Answer 41

NUEFELD- QUELLUNG

Question 42

Salt Tolerance Test
(Growth In 6.5%) POSITIVE

Answer 42

GROUP D ENTEROCOCCUS

Question 43

Salt Tolerance Test
(Growth In 6.5%) NEGATIVE

Answer 43

GROUP D NON ENTEROCOCCUS

Question 44

Penicillin Susceptibility Test RESISTANT

Answer 44

GROUP D ENTEROCOCCUS

Question 45

Penicillin Susceptibility Test SUSCEPTIBLE

Answer 45

GROUP D NON ENTEROCOCCUS

Question 46

Pyrrolidonyl Arylamidase (PYR) POSITIVE

Answer 46

GROUP D ENTEROCOCCUS

Question 47

Pyrrolidonyl Arylamidase (PYR) NEGATIVE

Answer 47

GROUP D NON ENTEROCOCCUS