# Simulating safe and unsafe blood tranfusions

Essay by rippefectJunior High, 7th gradeA+, November 2004

Simulating Safe and Unsafe Blood Transfusions

Hypothesis-My hypothesis is that blood type O cannot combine with any other blood type because it is represented by the color white and my guess is that if you combine white with any other blood type (color) it won't change its color. If O is mixed with yellow, blood type A, it won't change in color. If O mixes with blue, blood type B, it won't change color. And if O is combined with blue and yellow (green) it won't change color. I would think that if you are getting a blood transfusion it means that your blood is unhealthy and needs to be changed; so that is why I think O can not mix with any other blood type. I deem that the rest of the blood types when combined together will all change because they are all different colors.

Materials-

- 8 paper cups

- Medicine dropper

- Yellow and blue food coloring

- Marking pen

Method-

1: Label 4 paper cups A, B, AB, and O.

Below each of these letters, place the letter D for donor. These will be the blood donor cups.

2: Fill each cup half full with water. Set cup 0 aside for now.

3: Add two drops of yellow food coloring to cup A and two drops of blue food coloring to cup B.

4: To cup AB add two drops of yellow food coloring and two drops of blue food coloring.

5: Label the remaining 4 cups A, B, AB, and O. Below each of these letters, place the letter R for recipient. These cups will represent the recipient's blood groups A, B, AB, and O.

6: Repeat steps 2 through 4 using these cups.

7: Using the medicine dropper, place 2 drops of group...