Biology MCQs with Answers

This is Biology MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.

1. 1101 Brucella are
   

   1. Cocci

   2. Rods

   3. Cocobacilli

   4. Very short rods

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   Answer

   : Very short rods

   Explanation

   :
   N/A

2. 1102 Which of the following medium are used to differentiate the colonies of Vibrio cholerae and V parahaemolyticus?
   

   1. Alkaline bile salt

   2. Thiosulphate-citrate-bile-sucrose

   3. MacConkey

   4. All of the above

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   Answer

   : Thiosulphate-citrate-bile-sucrose

   Explanation

   :
   N/A

3. 1103 Agglutination test for Brucella mainly identifies which class of antibodies?
   

   1. IgG

   2. IgM

   3. IgA

   4. IgE

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   Answer

   : IgM

   Explanation

   :
   N/A

4. 1104 The most pathogenic Brucella spp for man is
   

   1. B melitensis

   2. B abortus

   3. B suis

   4. B canis

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   Answer

   : B melitensis

   Explanation

   :
   N/A

5. 1105 Human transmission of Brucellae occurs by
   

   1. ingestion of contaminated meat

   2. direct contact with animal tissues

   3. ingestion of infected milk

   4. all of these

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   Answer

   : all of these

   Explanation

   :
   N/A

6. 1106 For brucellosis, 2 ME agglutination test is used to identify
   

   1. IgG

   2. IgM

   3. IgA

   4. IgE

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   Answer

   : IgG

   Explanation

   :
   N/A

7. 1107 The commonest bacterial cause of cervicofacial actinomycosis is
   

   1. A. naeslundii

   2. A. viscosus

   3. A. israelii

   4. A. meyeri

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   Answer

   : A. israelii

   Explanation

   :
   N/A

8. 1108 Which of the following bacteria is moderately saccharolytic?
   

   1. Bacteriodes fragilis

   2. B gingivalis

   3. B melaninogenicus

   4. B levii

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   Answer

   : B melaninogenicus

   Explanation

   :
   N/A

9. 1109 Which of the following can be identified by milk ring test?
   

   1. Brucellosis

   2. Salmonellosis

   3. Bovine tuberculosis

   4. All of these

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   Answer

   : Brucellosis

   Explanation

   :
   N/A

10. 1110 Which of the following bacteria is gram-negative cocci?
    

    1. Veillonella

    2. Peptococcus

    3. Peptostreptococcus

    4. Sporosarcina

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    Answer

    : Veillonella

    Explanation

    :
    N/A