Cysteine is synthesized from -: (A) Methionine, (B) Arginine, (C) Histidine, (D) Lysine
Answer is A. Ans. is 'a' i.e., Methionine o The question is very simple.o One sulfur containing amino acid can be synthesized from other sulfur containing amino acid only,o Methionine and cysteine are sulfur containing amino acid.