Hey guys someone please help me with these question(see attachment).
In question 48 I chose c because I thought non specific umminty in humans include destruction of bacteria by enzymes in saliva but the answer says a) the production of antibodies by plasma cells. I thought that only happens in specific immunity.
In question 49, I have no idea what the question is ASKING.
I make a quick look through the VCAA website, you're right, the answer is C. TSFX must have stuffed up the answer
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For question 49, they are basically asking about how blood transfusion can be successful according to the characteristics of these blood type. You have to keep in mind that, IF A PERSON RECEIVES A BLOOD TRANSFUSION, THEY RECEIVE ONLY RED BLOOD CELLS ( NOT THE ANTIBODIES). Hence, for answer A e.g: if a group A person receives blood transfusion from a group B person because the group A has B antibodies in the blood, hence, the B antibodies in the patient's body will agglutinate with the transfused blood (causing death).
Whilst for answer B e.g: if a group B person (who as A antibodies) receive blood transfusion from a group O person (who has no antigens on their blood), it can be pretty safe.