76. What is the bond between two amino acids in a protein called ?

1. 1. Ester bond

   
   
   

   2. Glycosidic bond

   
   
   

   3. Peptide bond

   
   
   

   4. Phosphodiester bond

   
   
   

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   NA

   Correct Option: A

   NA

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77. Iodine deficiency in diet is known to cause

1. 1. beri-beri

   
   
   

   2. rickets

   
   
   

   3. night-blindness

   
   
   

   4. goitre

   
   
   

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   NA

   Correct Option: D

   NA

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78. Vitamin C is

1. 1. ascarbic acid

   
   
   

   2. nicotinic acid

   
   
   

   3. citric acid

   
   
   

   4. tartaric acid

   
   
   

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   NA

   Correct Option: A

   NA

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79. A metal which can form a complex with insulin is

1. 1. Copper

   
   
   

   2. iron

   
   
   

   3. zinc

   
   
   

   4. cobalt

   
   
   

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   NA

   Correct Option: C

   NA

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80. Keratin, a fibrous protein is present in

1. 1. hair and nails

   
   
   

   2. wool

   
   
   

   3. skin

   
   
   

   4. all of these

   
   
   

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   NA

   Correct Option: D

   NA

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