Semi essential amino acids are – a) Arginineb) Lysinec) Leucined) Histidine

Semi essential amino acids Semi essential amino acids are ones that can sometimes be made internally if conditions are right. Arginine and histidine are such amino acids that can be converted from other amino acids. Also know Conditionally essential amino acids Non-essential amino acids become essential if their precursors are deficient. Examples → Tyrosine (derived from pheylalanine) and cysteine (derived from methionine).