Multiple choice general knowledge science & technology

The red colour of the blood is due to–

  1. Albumin

  2. Haemoglobin

  3. Vitamin B6

  4. Relaxin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood appears red due to haemoglobin, an iron-containing protein in red blood cells that binds oxygen. The iron in haemoglobin gives blood its characteristic red color when oxygenated. Albumin is a transport protein, Vitamin B6 is a nutrient, and relaxin is a hormone.

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