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PH 152 > 1st Micro Trans, 3rd Exam > Flashcards

1st Micro Trans, 3rd Exam Flashcards

0
Q

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

A

C

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1
Q

Most commonly isolated member of family Bacteriodaceae

A

Bacteroides fragilis

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2
Q

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

A

A

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3
Q

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

A

B

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4
Q 
Which is not an anaerobic gram positive rod?
A. Veilonella
B. Actinomyces
C. Propionibacterium
D. Mobiluncus
A

A

It is a Gram negative coccus

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5
Q 
Phenylethyl alcohol agar grows all \_\_\_ anaerobes
A. Faculative
B. Obligate
C. Aerotolerant
D. Microaerophilic
A

B

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6
Q

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

A

Thioglycolic acid

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7
Q

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

A

Resazurin

Pink

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8
Q

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

A

True

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9
Q

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

A

C

Resistant dapat

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10
Q

Bacteroides is inhibited by bile

True or False

A

false

Stimulated dapat

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11
Q

All Bacteroides species cannot produce superoxide dismutase and catalase

T or F?

A

F

Bacteroides fragilis can

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12
Q 
Which virulence factor of Bacteroides is responsible for abscess formation?
A. Polysacch capsule
B. Endotoxin
C. Heparinase
D. Succinate
A

A

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13
Q

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

A

F

Structure ang kaiba

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14
Q

What does metronidazole have that clindamycin does not?

Clue: BBB

A

Metronidazole can cross blood brain barrier

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15
Q

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

A

F

Surgery dapat

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16
Q

Is Fusobacterium sensitive to Penicillin?

A

Yes

17
Q

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

A

B

Mouth and GUT dapat

18
Q 
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
A

B

Beta hemo too

19
Q

Enumerate the three virulence factors of Fusobacterium.

A

LPS
Hemolysin
Lipase

20
Q

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

A

Lemierre’s syndrome

21
Q

Forgotten Disease develops after ____ has created __

A

Sore throat has created a peritonsillar abscess

22
Q

From tonsillar vein, Fusobacterium goes to this blood vessel

A

Internal jugular vein

23
Q

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

A

Platelet aggregation

Septic thrombus formation

24
Q 
All three can treat Fusobacterium except
A. Metronidazole
B. Clindamycin
C. Cephalosporin
D. None of the above
A

D

25
Q 
False about Porphorymonas
A.saccharolytic
B.at mouth and lower genital tract
C.produce tan and black pigmentation
D.sometimes Beta hemolytic
A

A

asaccharolytic dapat

26
Q 
All are virulence factors of Porphorymonas gingivalis except
A. Butyrate
B. Collagenase
C. Lipase
D. Polysaccharide capsule
A

C

Lipase is in Fusobacterium

27
Q

Identify

Severe abscess caused by P.gingivalis

A

Empyema

28
Q

Drug of choice vs P.gingivalis

A

Penicillin G

29
Q

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

A

C

Some do not have pigment

30
Q

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

A

C

Resistant dapat

31
Q 
Which is not a virulence factor of Prevotella bivia?
A. Beta lactamase
B. Butyrate
C. Chymotrypsinase
D. Trypsinase
E. Hemin
A

B

B is for Porphorymonas

32
Q 
Manifestations of P.bivia are usually
A. Cardiac
B. Pulmonary
C. Obstetric and Gynecologic
D. All of the above
A

C

33
Q

Drugs of choice for Prevotella bivia

A

Metronidazole

Imipenem

34
Q 
Which of the ff is a rare etiologic agent in serious infections?
A. Porphyromonas
B. Veilonella
C. Peptococcus
D. Fusobacterium
A

B

35
Q 
Veilonella can be found in the ff except
A. Mouth
B. Vagina
C. GIT
D. LRT
A

D

URT dapat

36
Q 
False about Propionibacterium
A. Ferments --> propionic acid & carbon dioxide
B. Pleiomorphic
C. Aerobic to aerotolerant
D. Makes Swiss cheese
A

C

Anaerobic dapat

37
Q

Causative agent of acne vulgaris

A

Propionibacterium acnes

38
Q

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

A

Excessive oil production

Inflammation of sebaceous glands

39
Q 
False about Peptostreptococcus
A. Cells in lumps or chains
B. Gram negative anaerobe
C. Participate in mixed anaerobic 
infection
D. Penicillin is treatment
A

B

Gram positive anaerobe

PH 152 (47 decks)

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