AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

BLOOD GROUPS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following antigen systems in NOT well developed at birth?
A
Kell
B
Duffy
C
Kidd
D
none of the above
Explanation: 

Detailed explanation-1: -Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. For example, the skin acts as a barrier to block germs from entering the body. And the immune system recognizes when certain invaders are foreign and could be dangerous.

Detailed explanation-2: -8. Which of the following is NOT the characteristics of a good antigen. Explanation: A good antigen is defined by its complexity and size, plus its foreignness and dosage. Large size and highly complex antigen are considered as good and more responsive.

Detailed explanation-3: -Antigens include toxins, chemicals, bacteria, viruses, or other substances that come from outside the body. Body tissues and cells, including cancer cells, also have antigens on them that can cause an immune response.

There is 1 question to complete.