The colour of Hemoglobin is A. Red B. Yellow C. White D. Colorless

The correct answer is A. Red.

Hemoglobin is a protein that is found in red blood cells. It is responsible for carrying oxygen from the lungs to the rest of the body. Hemoglobin is red because it contains iron. Iron is a metal that is essential for carrying oxygen. When hemoglobin binds to oxygen, it changes shape and becomes a darker red color. This is why blood is red when it

Option B is incorrect because hemoglobin is not yellow. Option C is incorrect because hemoglobin is not white. Option D is incorrect because hemoglobin is not colorless.