Question

Tryptophan is called essential amino acid because

Answer 1

Answer:

Tryptophan is called essential amino

acid because

a. It contains aromatic nucleus.

b. It is present in all the human

proteins.

c. It cannot be synthesised by human

body.

d. It is essential constituent of

enzymes.​

Explanation:

Answer 2

Explanation:

Tryptophan is an amino acid needed for normal growth in infants and for the production and maintenance of the body's proteins, muscles, enzymes, and neurotransmitters. It is an essential amino acid. This means your body cannot produce it, so you must get it from your diet