586. Mycobacterium leprae is a

1. 1. Bacillus

   
   
   

   2. Coccus

   
   
   

   3. Spiral

   
   
   

   4. Spore

   
   
   

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1. View Hint View Answer Discuss in Forum

   Mycobacterium leprae is a bacillus.

   Correct Option: A

   Mycobacterium leprae is a bacillus.

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587. The most abundant enzyme in the living world is

1. 1. Rubisco

   
   
   

   2. Invertase

   
   
   

   3. DNAse

   
   
   

   4. Zymase

   
   
   

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1. View Hint View Answer Discuss in Forum

   The abundant enzyme in the living world is Rubisco. It is a key regulator of non-steady state of photosynthesis.

   Correct Option: A

   The abundant enzyme in the living world is Rubisco. It is a key regulator of non-steady state of photosynthesis.

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588. Nutrients are recycled in the atmosphere with the help of certain micro-organisms referred to as

1. 1. producers

   
   
   

   2. consumers

   
   
   

   3. decomposers

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Decomposers recycle nutrients in the atmosphere.

   Correct Option: C

   Decomposers recycle nutrients in the atmosphere.

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589. Minamata disease was caused due to

1. 1. Lead

   
   
   

   2. Cyanide

   
   
   

   3. Mercury

   
   
   

   4. Methyl isocyanate

   
   
   

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1. View Hint View Answer Discuss in Forum

   Mimamata disease in Japan was caused due to mercury.

   Correct Option: C

   Mimamata disease in Japan was caused due to mercury.

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590. Absence of fish along a river indicates
     

1. 1. Zone of degradation
      

   
   
   

   2. Zone of active decomposition
      

   
   
   

   3. All zones of pollution
      

   
   
   

   4. Zone of recovery

   
   
   

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1. View Hint View Answer Discuss in Forum

   Absence of fish along a river indicates zone of degradation.

   Correct Option: A

   Absence of fish along a river indicates zone of degradation.

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