Answer:
Explanation:
When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
Answer:
Explanation:
The blood agglutinate or clots
This does not happen when serum containing B antibodies is added to red blood cells carrying the A antigen because an antibody reacts only with its specific antigen and no other.
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The contact hypothesis is a theory in psychology which suggests that prejudice and conflict between groups can be reduced if members of the groups interact with each other.
