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Which of the following is a neutral amino acid?

 

Option: 1

Glycine


Option: 2

Lysine

 


Option: 3

Arginine

 


Option: 4

Histidine


Answers (1)

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Neutral amino acids contain equal number of amino and carboxyl groups. Glycine is a neutral amino acid.

Lysine, arginine and histidine contain two \mathrm{-\mathrm{NH}_2} groups and one \mathrm{-\mathrm{COOH}} group and are hence basic amino acids.

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Suraj Bhandari

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