Multiple choice general knowledge

The color of human skin is due to?

  1. Ptyalin

  2. Melanin

  3. Haemoglobin

  4. All of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Melanin is the pigment primarily responsible for human skin color variation. Hemoglobin gives red color to blood (visible in fair skin through blood vessels), while ptyalin is an enzyme in saliva, not a pigment. "All of these" is incorrect since only melanin directly determines skin color.