04.03 Assignment Hemostasis, Typing, and Transfusions

04.03 Hemostasis, Typing, and Transfusions

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Blood Typing – 30 points total
The Type A and Type B carbohydrate molecules are called antigens because they can stimulate the
body to produce an immune response, including antibodies. Antibodies are special proteins that
travel in the blood and help our bodies to destroy viruses or bacteria that may have infected our
bodies (see figure on next page).
Adapted from Figure 40.5 in Holt Biology by Johnson and Raven




Normally, our bodies do not make antibodies against any molecules that are part of our own
bodies. Thus, antibodies help to defend against invading viruses and bacteria, but normally
antibodies do not attack our own body cells.

For example, people with Type A blood do not make antibodies against the Type A antigen which
is present on their red blood cells. However, they do make antibodies against the Type B antigen
(called anti-B antibodies).




Test your understanding of blood groups by filling in the blanks in the chart below. (4 pts)




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