You and a friend are being chased by a bear. under these conditions levels of epinephrine are increased due to metabolism of which of the following amino acids

For producing epinephrine, tyrosine is required.

Explanation:

Epinephrine is produced in adrenal medulla, where the amino acid tyrosine is transformed to norepinephrine. An enzyme known as phenylethanolamine N-methyltransferase catalyzes the methylation of norepinephrine to epinephrine.