Understanding Skin Color

What is the primary determinant of skin color in humans?

• collagen

• hemoglobin

• carotene

• melanin

How does exposure to sunlight affect skin color?

• Exposure to sunlight increases the production of melanin in the skin, which leads to a darker skin color.

• Exposure to sunlight causes the skin to become lighter in color.

• Exposure to sunlight causes the skin to become transparent.

• Exposure to sunlight has no effect on skin color.

What is the difference between eumelanin and pheomelanin?

• Eumelanin is blue-green, while pheomelanin is red-yellow.

• Eumelanin is white, while pheomelanin is black.

• Eumelanin is red-yellow, while pheomelanin is brown-black.

• Eumelanin is brown-black, while pheomelanin is red-yellow.

What are some factors other than genetics that can influence skin color?

• Hair color

• Eye color

• Diet and nutrition

• Exposure to sunlight, geographical location, and cultural practices.

What is the purpose of melanin in the skin?

• To protect the skin from UV radiation

• To cause skin cancer

• To make the skin darker

• To attract sunlight