Question

why did blood is red

Answer 1

$\huge\purple{Hello there }$

___________

Human Blood contains haemoglobin , It is oxygen carring protein .

Haemoglobin combines with 4 O2 , and carries blood to each and every cell of body

This haem part of haemoglobin is red pigment which gives red color to blood

$\huge\green{For information }$

Haemoglobin is made up of 574 amino acids

Haemoglobin has four chains , 2 alpha chainsnwhich are made up of 141 amino acids .

2 beta chains which are made up of 146 amino acids

__________________

$\huge\red{INSHALLAH IT WILL HELP U}$

Answer 2

Human blood is red due to presence of Hemoglobin.

hope it's help you......