1. A
2. Yes, B antigens are on the surface of red blood cells.
3. No, anti-B antibodies are floating through plasma.
4. A
5. A and B
6. A, B, AB, O
7. B
8. B
9. Anti-A
10. Anti-B
11. Yes, because Maria has type B blood and Jacob has type B blood; they are compatible.
12. No, because Maria has type B blood and Jacob has type B blood; while this is compatible, the question asks if Maria can receive Jacob’s blood in an emergency. Since they are siblings and likely have the same blood type (B), it is safe. However, if we strictly interpret “receive Jacob’s blood” as transfusion from Jacob to Maria, and assuming no other complications, yes she can. But if the intent is to test knowledge of universal donors/acceptors, note that O- is the universal donor and AB+ is the universal acceptor. Since both are type B, it is acceptable. So answer is: Yes, because they share the same blood type (B), making transfusion safe in an emergency.
Parent Tip: Review the logic above to help your child master the concept of blood group worksheet.
