Conditionally Essential amino acids are: (A) Tyrosine & Cysteine, (B) Histidine & Arginine, (C) Leucine & Lysine, (D) Phenylalanine & Tryptophan
Answer is A. Conditionally Essential Amino Acids (CEAA):
Non-essential amino acids may turn essential if their precursors are limited in the body
– There are 2 CEAA, namely, Tyrosine (derived from Phenyalanine) and Cyteine (derived from methionine)