How many number of amino acids are present in the plant, animal and microbial proteins?
A
20
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B
80
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C
150
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D
200
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Solution
The correct option is A 20 Amino acids are colourless crystalline, water soluble, and aminated organic acids formed of carbon, hydrogen, oxygen and nitrogen and sulphur. There are some 200 known amino acids out of which 20 occur naturally in proteins.
There are 20 amino acids which are most commonly found in proteins and more specifically, those encoded by the DNA. Other amino acids occur as the result of a modification to these amino acids.