Of these choices: carotene, hemoglobin, melanin, what is the most responsible for the skin color of dark-skinned people? What provides a natural sunscreen?
Answers
Answer:
Melanin is responsible for skin color, carotene can provide some protection against the sun.
Explanation:
Melanin is a pigment that gives the skin color. This melanin is produced by so called melanocytes. Melanocytes are located at the bottom of the top layer of the skin (the epidermis). Melanocytes of people with dark skin produce more melanin.
Melanin is the bodies own way to protect the skin against sunlight. The molecule effectively absorbs UV-light and neutralizes damaging molecules (radicals) created by exposure to sunlight.
Melanin is responsible for the skin colour of dark-skinned people.
It proves them a natural sunscreen.
Fun Fact: Most of the dark skin people originate from the equator, where are are ample of sunrays and many other harmful rays that increase the chance of skin cancer and as a result they need something to protect their skin surface. and melanin naturally fills the place.