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.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.