Question

assignment active recalling the importance of on the blood determine a persons blood type. in the blood attack foreign blood not compatible with the antigens on the blood. done

Explanation:

For the first blank, antigens on red blood cells determine blood type (e.g., A, B, AB, O based on A/B antigens). For the second blank, antibodies in blood plasma attack foreign blood with incompatible antigens (e.g., anti - A antibodies attack A antigens in foreign blood if the person doesn't have A antigens).

Answer:

First blank: Antigens
Second blank: Antibodies