Ch 2 : Micrococcaceae

Question 1

Family m :

Answer 1

Micrococcaceae

Question 2

Genus :

Answer 2

Micrococcus , staphyloccocus

Question 3

Species and how many species:

Answer 3

More than 30 species and
1_ s.aureus
2_ s.saprophyticus
3_s.epidermidis
4_ M.luteus

Question 4

Gram +
Catalase _
Family:

Answer 4

Strptococcaceae

Question 5

Gram +
Catalaes +
Family:

Answer 5

Micrococcaceae

Question 6

Example of:
Coagulase +
And
Coagulase _

Answer 6

Coag + : staphylococcus aurues
Coag - staphylococcus epidermidis and
staphylococcus saprophyticus

Question 7

انواع ال morphology

Answer 7

1_ Diplococcus
2_streptococcus
3_ tetrad
4_sarcina
5_staphylococcus

Question 8

S.aurues toxin_mediated :

Answer 8

1_ food poisoning

2_ toxic shock syndrome

Question 9

S.aureus cutaneous :

Answer 9

1_ impetigo
2_ folliculitis
3_furuncles
4_carbuncles
5_wound infection

Question 10

S.aureus other :

Answer 10

1_ bacteremia
2_endocarditis
3_penumonia

Question 11

S.aureus virulence factor : structural components :

Answer 11

1 capsule
2 peptidoglycan
3 protein A
4 plasmic membrane

Question 12

S.aureus virulence factor : enzymes :

Answer 12

Coagulase : convert fibrinogen to fibrin
Catalase : catalase removal of hydrogen peroxide
Lipase : hydrolyse lipid
Nuclease : hydrolyse DNA
Penicillinase : hydrolyse Penicillins

Question 13

S. Aureus ribitol acid :

Answer 13

Polysaccharide A

Question 14

S.epidermidis glycerol teichoic acid :

Answer 14

Polysaccharide B

Question 15

Staph lap id and diagnostic test :

Answer 15

1_ microscopic examination
2_ lab isolation
3_ identification coagulase positive
_ s . Aureus

Question 16

Mannitol salt agar MSA تكلم عنه

Answer 16

للتفريق بين s. Spacies و s. Aureus
التي تخمر ال mannitol بتأثيرها على لون الكاشف phenol red وتعطي اللون الاصفر بينما ال staph الاخرى لتخمر ال mennitol ,
بيئة اختيارية لان التركيز الاملاح 7،5٪
وهو عبادة عن differntial و selective

Question 17

‏differntial:

Answer 17

قدرت البكتيريا على تخمير سكر ال mannitol وهي staph .ssp

Question 18

Selective :

Answer 18

لانه فقط يسمح بنمو staph . Aureus وتظهر باللون الاصفر الذهبي

Question 19

The gas which is produce by breakdown of catalase enzyme is :

Answer 19

Oxygen

Question 20

The reagent tha used to check abillty of bacteria to produce catalase enzyme :

Answer 20

H2O2 3%