1st Micro Trans, 3rd Exam

Question 0

Morphology of Bacteroides
A. Small, with pigments
B. Long, slender, pointed ends
C. Pleomorphic

Answer 0

C

Question 1

Most commonly isolated member of family Bacteriodaceae

Answer 1

Bacteroides fragilis

Question 2

Morphology of Prevotella & Porphyromonas
A. Small, with pigments
B. Long, slender, pointed ends
C. Pleomorphic

Answer 2

A

Question 3

Morphology of Fusobacterium
A. Small, with pigments
B. Long, slender, pointed ends
C. Pleomorphic

Answer 3

B

Question 4

Which is not an anaerobic gram positive rod?
A. Veilonella
B. Actinomyces
C. Propionibacterium
D. Mobiluncus

Answer 4

A

It is a Gram negative coccus

Question 5

Phenylethyl alcohol agar grows all \_\_\_ anaerobes
A. Faculative
B. Obligate
C. Aerotolerant
D. Microaerophilic

Answer 5

B

Question 6

In thioglycollate broth, ___ is the reducing agent that removes oxygen

Answer 6

Thioglycolic acid

Question 7

___ is the reduction indicator used in thioglycolate broth. Presence of oxygen signifies a __ color

Answer 7

Resazurin

Pink

Question 8

True or false. The protease in members of family Bacteriodaceae degrades IgA

Answer 8

True

Question 9

Which is false about Bacteroides?
A. Saccharolytic
B. May cause septicemia and intraabdominal infection
C. Sensitive to penicillin and older cephalosporins
D. Pleomorphic, with vacuoles and swellings

Answer 9

C

Resistant dapat

Question 10

Bacteroides is inhibited by bile

True or False

Answer 10

false

Stimulated dapat

Question 11

All Bacteroides species cannot produce superoxide dismutase and catalase

T or F?

Answer 11

F

Bacteroides fragilis can

Question 12

Which virulence factor of Bacteroides is responsible for abscess formation?
A. Polysacch capsule
B. Endotoxin
C. Heparinase
D. Succinate

Answer 12

A

Question 13

The endotoxin of Bacteroides is the same as the one for other bacteria. T / F?

Answer 13

F

Structure ang kaiba

Question 14

What does metronidazole have that clindamycin does not?

Clue: BBB

Answer 14

Metronidazole can cross blood brain barrier

Question 15

Metronidazole is the best way to treat abscess formation, T or F?

Answer 15

F

Surgery dapat

Question 16

Is Fusobacterium sensitive to Penicillin?

Answer 16

Yes

Question 17

Which is false?
A. F.nucleatum is thin with pointed ends
B. F.nucleatum may be found at GIT and GUT
C. F.nucleatum is sometimes alpha hemolytic
D. F.nucleatum colonies are convex, translucent, dull and opaque

Answer 17

B

Mouth and GUT dapat

Question 18

Which is false?
A. F.necrophorum may be found at GIT
B. It may only be alpha hemolytic
C. It is broad with rounded ends/bulbous swellings
D. None of the above

Answer 18

B

Beta hemo too

Question 19

Enumerate the three virulence factors of Fusobacterium.

Answer 19

LPS
Hemolysin
Lipase

Question 20

The ff pertain to what disease?
❤️Postanginal sepsis
❤️Human necrobacillosis
❤️Forgotten Disease

Answer 20

Lemierre’s syndrome

Question 21

Forgotten Disease develops after ____ has created __

Answer 21

Sore throat has created a peritonsillar abscess

Question 22

From tonsillar vein, Fusobacterium goes to this blood vessel

Answer 22

Internal jugular vein

Question 23

At the internal jugular vein, the endotoxin of Fusobacterium produces two things…

Answer 23

Platelet aggregation

Septic thrombus formation

Question 24

``` All three can treat Fusobacterium except A. Metronidazole B. Clindamycin C. Cephalosporin D. None of the above ```

Answer 24

D

Question 25

``` False about Porphorymonas A.saccharolytic B.at mouth and lower genital tract C.produce tan and black pigmentation D.sometimes Beta hemolytic ```

Answer 25

A asaccharolytic dapat

Question 26

``` All are virulence factors of Porphorymonas gingivalis except A. Butyrate B. Collagenase C. Lipase D. Polysaccharide capsule ```

Answer 26

C Lipase is in Fusobacterium

Question 27

Identify | Severe abscess caused by P.gingivalis

Answer 27

Empyema

Question 28

Drug of choice vs P.gingivalis

Answer 28

Penicillin G

Question 29

False about Prevotella A.saccharolytic B.at respi and female GUT C.all have pigmentation

Answer 29

C Some do not have pigment

Question 30

False about Prevotella bivia A.small coccobacilli in pairs or short chains B.cause bacterial vaginosis C.sensitive to Penicillin G and cephalosporin

Answer 30

C Resistant dapat

Question 31

``` Which is not a virulence factor of Prevotella bivia? A. Beta lactamase B. Butyrate C. Chymotrypsinase D. Trypsinase E. Hemin ```

Answer 31

B B is for Porphorymonas

Question 32

``` Manifestations of P.bivia are usually A. Cardiac B. Pulmonary C. Obstetric and Gynecologic D. All of the above ```

Answer 32

C

Question 33

Drugs of choice for Prevotella bivia

Answer 33

Metronidazole | Imipenem

Question 34

``` Which of the ff is a rare etiologic agent in serious infections? A. Porphyromonas B. Veilonella C. Peptococcus D. Fusobacterium ```

Answer 34

B

Question 35

``` Veilonella can be found in the ff except A. Mouth B. Vagina C. GIT D. LRT ```

Answer 35

D URT dapat

Question 36

``` False about Propionibacterium A. Ferments --> propionic acid & carbon dioxide B. Pleiomorphic C. Aerobic to aerotolerant D. Makes Swiss cheese ```

Answer 36

C Anaerobic dapat

Question 37

Causative agent of acne vulgaris

Answer 37

Propionibacterium acnes

Question 38

Growth of P.acnes stimulated by ___, leading to inflammation of __

Answer 38

Excessive oil production | Inflammation of sebaceous glands

Question 39

``` False about Peptostreptococcus A. Cells in lumps or chains B. Gram negative anaerobe C. Participate in mixed anaerobic infection D. Penicillin is treatment ```

Answer 39

B Gram positive anaerobe