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. 101 Microbial rennet, which is used in cheese manufacture is produced by
   

   1. Mucor spp

   2. Aspergillus spp

   3. Bacillus spp

   4. Saccharomyces spp

   See Answer

   Added By: Admin

   Answer

   : Aspergillus spp

   Explanation

   :
   N/A

2. 102 Most biopolymers produced by micro-organisms are
   

   1. cell wall constituents

   2. nucleic acids

   3. histones

   4. exopolysaccharides

   See Answer

   Added By: Admin

   Answer

   : exopolysaccharides

   Explanation

   :
   N/A

3. 103 The precursor used for production of vitamin B12 by Streptomyces olivaceus is
   

   1. cobalt chloride

   2. cobalt sulphate

   3. calcium chloride

   4. calcium sulphate

   See Answer

   Added By: Admin

   Answer

   : cobalt chloride

   Explanation

   :
   N/A

4. 104 The precursor of Penicillin G is
   

   1. phenoxy acetic acid

   2. phenyl acetic acid

   3. hydroxy phenyl acetic acid

   4. none of these

   See Answer

   Added By: Admin

   Answer

   : phenyl acetic acid

   Explanation

   :
   N/A

5. 105 The first commercial fermention carried out to obtain L-lysine is known as
   

   1. dual fermentation

   2. indirect fermentation

   3. direct fermentation

   4. both (a) and (b)

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   Answer

   : both (a) and (b)

   Explanation

   :
   N/A

6. 106 Which of the following is not a principal media for industrial alcohol production by fermentation?
   

   1. Black strap molasses

   2. Sulphite waste liquor

   3. Wood waste

   4. Glucose

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   Answer

   : Glucose

   Explanation

   :
   N/A

7. 107 The production of alcohol from lactose of whey is generally carried out by
   

   1. Saccharomyces cerevisiae

   2. Candida pseudotropicalis

   3. Candida utilis

   4. none of these

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   Answer

   : Candida pseudotropicalis

   Explanation

   :
   N/A

8. 108 Cephalosporin an antibiotic closely related to penicillin in structure and antibiotic activity are produced by species of
   

   1. Cephalosporium

   2. Cephalospodium

   3. Pseudomonas

   4. Bacillus

   See Answer

   Added By: Admin

   Answer

   : Cephalospodium

   Explanation

   :
   N/A

9. 109 Which of the following is a cephalosporin?
   

   1. Cephalosporin N

   2. Synnematin

   3. Cephalosporin C

   4. All of these

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   Answer

   : All of these

   Explanation

   :
   N/A

10. 110 Which of the following is not a penicillin?
    

    1. Penicillin G

    2. Penicillin X

    3. Penicillin V

    4. Penicillin Y

    See Answer

    Added By: Admin

    Answer

    : Penicillin Y

    Explanation

    :
    N/A