Basic Bacteriology

Question 1

Which organism grow in chocolate agar ?

Answer 1

H-influnza

Question 2

Which organism grow in thayer-martin agar?

Answer 2

Two types of nesseria

Question 3

Which organism grow in bordet-gengou agar ?

Answer 3

Pertussis

Question 4

Which organism grow in tellurie agar, loffler medium?

Answer 4

C. Diphtheria

Question 5

Which organism grow in lowenstein-jensen agar ?

Answer 5

Tuberculosis

Question 6

Which organism grow in Eaton agar ?

Answer 6

M.pneumonea

Question 7

Which organism grow in MacConkey agar ?

Answer 7

Lactose-ferminting enterics

Question 8

Which organism grow in eosin- methylene blue (EMB) agar ?

Answer 8

E.coli

Question 9

Which organism grow in charocal yeast extract agar buffered with cystein and iron?

Answer 9

Legionella

Question 10

Which organism grow in sabourand agar ?

Answer 10

Fungi

Question 11

Which type of stains use for diagnosis of whipple disease ?

Answer 11

Periodic acid -schiff stain

Question 12

Giemsa stain use for :

Answer 12

PCR-TB

1. Chlamydia
2. Borrelia
3. Rickettsia
4. Trypanosoma
5. Plasmodium

Question 13

Ziehl-neelsen stain (carbol fuchsin) use for:

Answer 13

1. Acid fast bacteria ( eg, TB, nocardia)

2. Protozoa (eg, cryptos-poridium oocytes)

Question 14

Indian ink stain use for :

Answer 14

Cryptococcus neoformans

Question 15

Silver stain use for :

Answer 15

1. Legionella
2. Fungi
3. H.pylori

Question 16

Obligate intracellula bacteria:

Answer 16

• ** CCR
  1. Rickettsia
  2. Chlamydia
  3. Coxiella

Question 17

Facultative intracellular bacteria

Answer 17

• LLMYS-NB
  1. Salmonella
  2. Nesseria
  3. Brucella
  4. Mycobacterium
  5. Listeria
  6. Legionella
  7. Yerisina

Question 18

Encapsulared bacteria

Answer 18

• Please SHINE my SKiS:
  1. P- Pseudomonas
  2. S-streptococcus pneumonia
  3. H+I H-Influnza
  4. N-Nesseria
  5. E- E.coli
  6. S- Salmonella
  7. K-Klebsiella
  8. S-Streptococci grop B

Question 19

Function of bacteria capsule

Answer 19

Anti-phagocytic virulence factor

Question 20

Urease (+) organism :

Answer 20

• Pee CHUNKSS:
  1. P-proteus
  2. C-Cryptococcus
  3. H-H.pylori
  4. U- Ureaplasma
  5. N-Nocardia
  6. k-Klebsiella
  7. S-S.epidermidis
  8. S-S. saprophyticus

Question 21

In vivo bifilm producing bacteria :

Answer 21

1. S.epidermidis
2. S.viridans
3. Pseudomonas
4. Nontypeable H-influnza

Question 22

Which bacteria produce protein A?

Answer 22

S.aureus

Question 23

Which bacteria produce IgA protease ?

Answer 23

SHiN

1. S.pneumonea
2. H-influnza
3. Nesseria

Question 24

Which bacteria produce M-protein ?

Answer 24

Group A streptococci ( S. pyogenes )

Question 25

Which bacterial virulence factor bind to Fc region of IgG, and prevent opsonization and phagocytosis?

Answer 25

Protein A

Question 26

Which enzyme that cleaves IgA, allowing bateria to adhere to it, and colonize mucus membrabne ?

Answer 26

IgA protease

Question 27

Which bacterial virulence factor help in prevent the phagocytosis and shares similar epitopes to human cellular protein ( molecular mimicry) and seen in acute reumatic fever ?

Answer 27

M-protein

Question 28

What’s the needle-like protein appendage facilitaing direct delivery of toxins from gran (-) bacteria to eukaryotic host cell ?

Answer 28

Type 3 secretion system” injectisome”

Question 29

Their’s two structures in the bacteria that responsible for delivery the bacterial component, what are thay ?

Answer 29

1. Injectisome | 2. Sex pilli

Question 30

Transporting of DNA from bacteria to another by:

Answer 30

Sex pilli

Question 31

Transporting of toxin from bacteria to human by :

Answer 31

Injectisome

Question 32

Exotoxin that inhibit protein synthesis :

Answer 32

1. Diphtheria toxin 2. Exotoxin A 3. Shiga toxin 4. Shiga-like toxin

Question 33

Exotoxin that increase fluid secretion :

Answer 33

1. Heat-labile toxin 2. Heat -stable toxin 3. Edema toxin 4. Cholera toxin

Question 34

Exotoxin that inhibit phagocytosis :

Answer 34

Proteussis toxin

Question 35

Phagocytability decrease by :

Answer 35

1. Protein A | 2. Protein M

Question 36

Exotoxin that inhibit on neurotransmittier:”

Answer 36

1. Tetansospasmin | 2. Botulinum toxin

Question 37

Exotoxin that lyse cell membrane :

Answer 37

1. Alpha toxin | 2. Streptolysin O

Question 38

Exotoxin that superantigen cause shock :

Answer 38

1. Toxic shock syndrome toxin | 2. Exotoxin A

Question 39

Different between toxic shcok and septic shock:

Answer 39

Septic shock : shock + fever. | Toxic shock : shock + fever + rash .

Question 40

Lipopolysacchride that found in:

Answer 40

outer membrane of gram (-) bacteria

Question 41

(LPS) coposed of:

Answer 41

1. Lipid A (endotoxin) 2. Core polysacchride 3. O antigen

Question 42

Three main effects of endotoxin :

Answer 42

1. Macrophage activation 2. Complement activation 3. Tissule factor activation

Question 43

All gram (+) bacteria don’t have endotoxin except:

Answer 43

Listeria

Question 44

Macrophage activiation lead to

Answer 44

Septic shock : fever, hypotension

Question 45

Complement activation lead to :

Answer 45

1. Histamin release: hypotension +edema. | 2. Neutrophil chemotaxis

Question 46

Tissue factor activation lead to :

Answer 46

DIC

Question 47

Why their’s no vaccine available aginst endotoxin ?

Answer 47

Due to the structure of the endotoxin doesn’t contains protein, therfore immune system can’t produce antibodies aginst it .

Question 48

Spore forming bacteria:

Answer 48

1. Anthracs | 2. Clostridum

Question 49

In which phase the spore forming bacteria form the sporess ?

Answer 49

At the end of stationary phase

Question 50

Encapsulated bacterial vaccine :

Answer 50

1. Pneumococcal vaccine 2. H-influnza vaccine 3. Meningiococcal vaccine