Why can't a person with type B blood (recipient) receive a blood transfusion from someone with...

Why can't a person with type B blood (recipient) receive a blood transfusion from someone with type A blood (donor)?

the recipient's anti-B antibodies will react with the donated B antigens

the recipient's anti-A antibodies will bind to the A antigens of the donated blood cells

the recipient's anti-A and anti-B antibodies will react with the donated blood cells

the recipient's anti-O antibodies will bind to the O antigen of the donated blood cells

no reaction would occur because the B-type individual does not have antibodies

Many tens of thousands of people who were seen as "unfit" were sterilized or killed by the Nazi regime to intentionally prevent them from reproducing. This is an example of:

amniocentesis

positive natural selection

positive eugenics

negative eugenics

balanced polymorphism

How is innate immunity different from adaptive immunity?

Adaptive immunity is fast and generalized; innate immunity is slow and specific.

Innate immunity targets cancers and transplants; adaptive immunity targets viruses and bacteria.

Innate immunity is fast and generalized; adaptive immunity is slow and specific.

Adaptive immunity releases cytokines; innate immunity produces antibodies.

Innate immunity is present in fetuses and children whereas adaptive immunity is only present in adults.

Solutions

Expert Solution

Answer 1. The recipients anti-A will bind to the A antigen of the donor.

The blood group B contains B antigens and anti - A antibodies in serum, whereas A blood group contains A antigen and and anti-B antibodies in the serum. So, if the blood of A is transfused into B it will lead to clotting of blood as anti-A will bind to A antigen. Thus, B blood group individual can have transfusion from either B blood group individual or from O group. Compatible reaction has to be understood before transfusion.

Answer 2. Negative eugenics.

In this, sterilisation of the individuals is done bearing less desired or undesired traits.

Answer 3. Innate immunity is fast and generalised and adaptive immunity is slow and specific.

Innate immunity is the immunity with which an individual is born with and it is non-specific means act against all the antigens, whereas adaptive immunity is acquired in response to the antigen, it is quite slow in action and specific in its action

gladiator answered 1 year ago

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