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. 131 The medium required for glutamic acid mainly consist of
   

   1. glucose

   2. molasses

   3. sucrose

   4. lactose

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   Answer

   : glucose

   Explanation

   :
   N/A

2. 132 The beet molasses is pretreated with __________ to reduce great quantity of trace metals.
   

   1. ferrocyanide or ferricyanide

   2. ethylenediamine tetrachloro acetic acid

   3. hydrochloric acid

   4. sulphuric acid

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   Answer

   : ferrocyanide or ferricyanide

   Explanation

   :
   N/A

3. 133 Commercial scale production of amino acids is typically carried out using
   

   1. regulatory mutants to cause overproduction of biochemical intermediates

   2. creation of an intentional increase in membrane permeability to increase release of the amino acids

   3. both (a) and (b)

   4. none of the above

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   Answer

   : both (a) and (b)

   Explanation

   :
   N/A

4. 134 "Vinegar mother" in Orleans process is
   

   1. inoculum of acetobacter bacteria used

   2. considerable slime and film growth of Acetobacter bacteria on the surface of the alcoholic broth

   3. cellulosic strands produced by Acetobacter bacteria to hold cells together

   4. none of the above

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   Answer

   : considerable slime and film growth of Acetobacter bacteria on the surface of the alcoholic broth

   Explanation

   :
   N/A

5. 135 Who was the first scientist to observe the antibiotic and therapeutic properties of penicillin?
   

   1. Louis Pasteur

   2. Alexander Fleming

   3. S. C. Prescott

   4. E. P. Abraham

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   Answer

   : Alexander Fleming

   Explanation

   :
   N/A

6. 136 Which of the following organism is utilized to obtain commercial L-lysine by direct method?
   

   1. Micrococcus glutamicus

   2. Mutated strain of Micrococcus glutamicus

   3. Brevibacterium aminogenes

   4. Mutated strain of Brevibacterium aminogenes

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   Answer

   : Mutated strain of Micrococcus glutamicus

   Explanation

   :
   N/A

7. 137 Anaerobic bacteria undergoes butyric isopropyl fermentation in carbohydrates to yield
   

   1. glycol

   2. butyric acid

   3. acetic acid

   4. all of these

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   Answer

   : all of these

   Explanation

   :
   N/A

8. 138 Microbially produced streptokinase is used to
   

   1. remove spots from laundry products

   2. dissolve clots for patients with coronary blockages

   3. clarify fruit juice

   4. breakdown starch molecules into smaller sugars

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   Answer

   : dissolve clots for patients with coronary blockages

   Explanation

   :
   N/A

9. 139 Amyloglucosidase is used in glucose production. It is produced by
   

   1. Rhizopus niveus

   2. Endomycopsis fibuliger

   3. Sclerotina libertina

   4. both (a) and (b)

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   Answer

   : both (a) and (b)

   Explanation

   :
   N/A

10. 140 The penicillin F which was produced at first, required the mold
    

    1. Penicillium chrysogenum

    2. Pencillium notatum

    3. Pencillium chrysogenum Q-176

    4. none of the above

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    Answer

    : Pencillium notatum

    Explanation

    :
    N/A