Multiple choice

What happens when type B blood is given to a person with type A blood?

  1. B Ag from the donor reacts with anti-B ab in the recipient.

  2. B Ag from the recipient reacts with anti-B ab in the recipient.

  3. B Ag from donor reacts with anti-A ab in the recipient.

  4. A Ag from donor reacts with anti-B ab in the recipient.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When type B blood is given to a person with type A blood, B Ag from the donor reacts with anti-B ab in the recipient. Complement is fixed and the red blood cells are lysed. Person with type A blood possesses type B antibodies. When type B blood is given to a person with type A blood, it causes lysis.

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