The most pathogenic Brucella spp for man is B melitensis B abortus B suis B cani

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Question
The most pathogenic Brucella spp for man is
Options
A. B melitensis
B. B abortus
C. B suis
D. B canis

Correct Answer

B melitensis

Brucella problems

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1. Which of the following bacteria is gram-negative cocci?
Options
A. Veillonella
B. Peptococcus
C. Peptostreptococcus
D. Sporosarcina

Discuss

Correct Answer: Veillonella

2. The commonest species of Bacteroides in fragilis group, which causes human infection, is
Options
A. B vulgatus
B. B fragilis
C. B ovatus
D. B merdae

Discuss

Correct Answer: B fragilis

3. Lactobacilli grow best under
Options
A. strict anaerobic conditions
B. microaerophilic conditions in presence of 5% CO₂ and PH6
C. microaerophilic conditions in presence of 3% CO₂ and PH5
D. microaerophilic conditions in presence of 2% CO₂ and PH4

Discuss

Correct Answer: microaerophilic conditions in presence of 5% CO₂ and PH6

4. Which of the following bacterial colonies fluoresce brick-red in UV light?
Options
A. B gingivalis
B. B melaninogenicus
C. Bacteroides fragilis
D. B levii

Discuss

Correct Answer: B melaninogenicus

5. Colonies resembling molar teeth are produced by
Options
A. Nocardia brasiliensis
B. N. asteroids
C. Actinomyces israelii
D. Actinomadura madurae

Discuss

Correct Answer: Actinomyces israelii

6. Which of the following can be identified by milk ring test?
Options
A. Brucellosis
B. Salmonellosis
C. Bovine tuberculosis
D. All of these

Discuss

Correct Answer: Brucellosis

7. For brucellosis, 2 ME agglutination test is used to identify
Options
A. IgG
B. IgM
C. IgA
D. IgE

Discuss

Correct Answer: IgG

8. Brucella are
Options
A. Cocci
B. Rods
C. Cocobacilli
D. Very short rods

Discuss

Correct Answer: Very short rods

9. Agglutination test for Brucella mainly identifies which class of antibodies?
Options
A. IgG
B. IgM
C. IgA
D. IgE

Discuss

Correct Answer: IgM

10. Human transmission of Brucellae occurs by
Options
A. ingestion of contaminated meat
B. direct contact with animal tissues
C. ingestion of infected milk
D. all of these

Discuss

Correct Answer: all of these

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