AP BIOLOGY

Detailed explanation-1: -The antigens expressed on the red blood cell determine an individual’s blood group. The main two blood groups are called ABO (with blood types A, B, AB, and O) and Rh (with Rh D-positive or Rh D-negative blood types).

Detailed explanation-2: -Blood types are determined by the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body. Since some antigens can trigger a patient’s immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching.

Detailed explanation-3: -Your blood type is based on whether or not certain proteins are on your red blood cells. These proteins are called antigens. Your blood type (or blood group) depends on what types your parents passed down to you. Blood is often grouped according to the ABO blood typing system.

Detailed explanation-4: -These are determined by the presence or absence of two antigens – A and B – on the surface of red blood cells. There is also a protein called the Rh factor, which can be either present (+) or absent (–), and this creates the eight most common blood types (A+, A-, B+, B-, O+, O-, AB+, AB-).