Question

A person with blood group O has
A.Only anti- A antibodies
B.Only anti- B antibodies
C.Both anti- A and anti- B antibodies
D.Both A and B antigens

Answer 1

A blood classification otherwise called a blood type may be a characterization of blood, in sight of the presence and nonappearance of antibodies and acquired antigenic substances on the surface of red platelets (RBCs). Some of those red platelet surface antigens can originate from one allele (or an elective adaptation of a quality) and altogether structure a blood group framework.

Complete answer:
Blood is formed from red blood cells, white blood cells and platelets called plasma. Your blood type is identified by antibodies and antigens within the blood. There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood type is decided by the genes you inherit from your parents. Each group are often either RhD positive or RhD negative, which implies that in total there are 8 blood groups.

Antibodies are proteins found in plasma. They're a part of your body's natural defences. They recognise foreign substances, like germs, and alert your system, which destroys them. Antigens are protein molecules found on the surface of red blood cells.

The ABO system: There are 4 main blood groups defined by the ABO system:
blood group A – features a antigens on the red blood cells with anti-B antibodies within the plasma
blood type B – has B antigens with anti-A antibodies within the plasma.
blood O type – has no antigens, but both anti-A and anti-B antibodies within the plasma. Blood group O is the commonest blood type.
blood AB – has both A and B antigens, but no antibodies

Receiving blood from the incorrect classification system is often life threatening. As O red blood cells don't have any A or B antigens, it can safely lean to the other group. O negative is that the most typical people used for transfusions when the blood group is unknown. This can be why it's used most frequently in cases of trauma, emergency, surgery and any situation where people are unknown. O negative is that the universal blood group. Blood type O individuals don't have either A or B antigens on the surface of their RBCs, and their serum contains IgM anti-A and anti-B antibodies. Therefore, an O individual can receive blood only from a bunch of O individuals, but can donate blood to individuals of any ABO blood type (i.e., A, B, O or AB). If a patient needs an urgent transfusion, and if the time taken to process the recipient's blood would cause a detrimental delay, O negative blood may be issued. Because it's compatible with anyone, O negative blood is commonly overused and consequently is usually in brief supply.
Hence, the correct answer is option (C)

Note: The red cells of an individual contain antigens on cell surfaces that compare to their people. Antibodies within the serum that recognize such antigen situate on the surfaces of red cells of other people. As of now, 35 blood group frameworks talking to over 300 antigens are recorded by the International Society of blood transfusion (ISBT).