contrasting antigens reacts with contrasting antibodies
similar antigens react with similar antibodies
two different antigens react with each other
two different antibodies react with each other
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This is wrong. It has to be same antigen reacting with its corresponding antibody for agglutination to occur! B is the answer
✅ Correct Answer: A. Contrasting antigens react with contrasting antibodies
Explanation:
Agglutination (clumping of red blood cells) occurs when antigens on the donor's red blood cells react with antibodies in the recipient’s plasma.
Blood Type Matching:
Blood contains antigens (A, B) on red blood cells and antibodies (anti-A, anti-B) in plasma.
If a person with blood type A (antigen A) receives blood from type B (which has anti-A antibodies), agglutination occurs.
The same happens if blood type B receives type A blood.
Why Other Options Are Incorrect?
B. Similar antigens react with similar antibodies ❌ – This does not happen because the body does not produce antibodies against its own antigens.
C. Two different antigens react with each other ❌ – Antigens do not react with each other; they react with antibodies.
D. Two different antibodies react with each other ❌ – Antibodies do not interact with each other; they only bind to their specific antigens.
Key Takeaway:
✅ Agglutination occurs when incompatible blood types mix, leading to a reaction between contrasting antigens and antibodies.
✅ Correct Answer: A. Contrasting antigens react with contrasting antibodies 🩸⚠️
a man with blood group a has anti b and antibidy a and thats is why people with blood group a can transfer blood to themselves therefore option b has to be correct
What is @tammy commenting and why is myschool concurring
agglutination is caused by contrasting genes and antibodies
Like Blood serum A mixing with Blood serum B
So the correct option is A
Reference: Idodo umeh Biology
when antigen a meets with antibody a. attingulation occurs antigen does not occur when antigen b meets with antibody a. so my school is right attiglutination occurs when similar antigens react with similar antibodies
During blood transfusion, agglutination may occur when **contrasting antigens react with contrasting antibodies**. This is because the immune system will recognize the foreign antigens on the transfused blood cells and the pre-existing antibodies in the recipient's blood will bind to these antigens, leading to clumping or agglutination of the blood cells. Therefore, the correct answer is:
A. contrasting antigens reacts with contrasting antibodies
