The chemistry of blood

The chemistry of blood 

Blood is a complex mixture. the chemicals in blood dictate its colour and some contribute its characteristics, slightly metallic odour. 

       here I am going to tell you about some of the difference of that determine a person’s blood type the colour of blood protein found in blood, built up smaller sub-unit containing ‘haems. these haems contain iron and their structure gives our blood its bright red colour when oxygenated, its non- oxygenated blood is a dark red colour not blue. blood lost due to bleeding gradually turn Brown as haemoglobin is oxidised to methaemoglobin. 

the smell of blood the compound that gives human blood its characteristic metallic odour is trans-4,5-epoxy-(E)-2-ethanol. 

Blood type  

It is determined by the presence of antigens are found on red blood cells surfaces that can bind to antibodies and stimulate immune response. Antibodies are protein in blood plasma that help fight infection. 

 The two most important blood group systems are as ABO (as A, B, AB and O) and RH (as Rh+ and Rh -)

There eight type of blood on the basis of presence of antigen and antibodies in it-

S.No.	A	B	AB	O
1	Antigen-A	Antigen-B	Antigen-A and B	none
2	Antibody-B	Antibody-A	none	Antibody-A and B