Part IV: Gram Positive Cocci - Alpha Hemolytic (Streptococci)

Question 1

Gram-Positive Streptococci

Alpha Hemolytic (2)

Answer 1

• S. pneumoniae
• Viridans streptococci spp.

Question 2

Alpha hemolytic Strep that is #1 caused of ADULT BACTERIAL MENINGITIS ( ABOVE 29 YRS OLD )

Answer 2

S. pnuemoniae

Question 3

S. pneumoniae is normal flora of (2)

Answer 3

Nasopharynx
Oropharynx

Question 4

Other Clinical Significance of S. pneumoniae (2)

Answer 4

1. Lobar pneumonia
2. Otitis Media

Question 5

Appearance of S. pneumoniae after 24 hrs incubation

Answer 5

Dome shaped appearance

Question 6

Appearance of S. pneumoniae after 48 hrs of incubation

Answer 6

Crater-like appeance
Nail Head Appearance

Question 7

Autolysis of S. pneumoniae leads to the appearance like

Answer 7

Checker appearance

Question 8

Increased ______ is used to enhanced the growth of S.pneumoniae

Answer 8

CO2

Question 9

Other Test for S. pneumoniae (1) that includes addition of SODIUM DEOXYCHOLATE

Answer 9

Bile solubility Test

Question 10

Bile Solubility Test: BAP - % Sodium deoxycholate

Answer 10

10%

Question 11

Bile Solubility Test: Broth - % Sodium deoxycholate

Answer 11

2%

Question 12

Bile Solubility Test

Incubation temp and duration

Answer 12

37 degC for 30 mins

Question 13

Viridans Streptococci spp are (4)

Answer 13

S. mitis
S. sanguis
S. salivarium
S. mutans

Question 14

Major throat flora

Answer 14

Viridans spp

Question 15

Viridans Strep is known to produce (2)

Answer 15

Dextrans and Glucans

Question 16

Dextrans and Glucans are for

Answer 16

attachment on the surface of the host cells

Question 17

Viridans strep plays a role in the development of dental caries

Answer 17

S. mutans

Question 19

Other term for Nutritionally Variant Streptocci (NVS) (4)

Answer 19

Thiol Requiring Strep
Pyridoxal Requiring Strep
Satelliting Strep
Cell wall deficient Strep

Question 20

NVS spp (2)

Answer 20

1. Abiotrophia
2. Granulicatella

Question 21

Characteristics of NVS (2)

Answer 21

S. adjacens
S. defectives

Question 22

S. adjacens and S. defectives are Viridans spp. that needs

Answer 22

Vitamin B6 for Growth