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Question

Which one consists of essential amino acids?

A
Tryptophan and Glutamic acid
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B
Lysine and Phenylalanine
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C
Leucine and Glycine
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D
Valine and histidine
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Solution

The correct option is B Lysine and Phenylalanine
Amino acids which cannot be synthesized by animals through transformation or transamination and get from outer supplement are called as essential amino acids. These amino acids must be present in the diet. Among 20 amino acids only 9, amino acids are essential. Leucine, isoleucine, tryptophan, phenylalanine, lysine, methionine, valine and threonine are essential amino acids. Thus, the correct answer is B.

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