Which of the following is an essential amino acid (as per the NCERT list)?

AGlycine
BValine
CAlanine
DSerine

Answer: B

Essential amino acids cannot be synthesised by the body: valine, leucine, isoleucine, arginine, lysine, threonine, methionine, histidine, phenylalanine and tryptophan. Glycine, alanine and serine are non-essential.

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