cell inj3/bcm - zalato5

[ArchivalUser]

A 29-year-old man goes on a snorkeling trip to Looe Key Marine Sanctuary and later spends time on the beach at Bahia Honda State Park. The next day he has a darker complexion. His skin does not show warmth, erythema, or tenderness. His skin tone fades to its original appearance within a month. Which of the following substances contributes the most to the biochemical process leading to these skin changes?

A Heme

B Lipofuscin

C Tyrosine

D Homogentisic acid

E Glycogen

[ArchivalUser]

cc?

[ArchivalUser]

© CORRECT. The tanning process in skin is stimulated by ultraviolet light exposure. Melanocytes have the enzyme tyrosinase to oxidize tyrosine to dihydroxyphenylalanine in the pathway for melanin production.