Blood Typing - calhoun.k12.al.us
Blood Typing
| |Sample 1 |Sample 2 |Sample 3 |Sample 4 |
|Anti-A | | | | |
|Anti-B | | | | |
|Rh | | | | |
|Blood Type: | | | | |
2. At 1:00 a.m., someone breaks a window in the back of a store and robs the safe. On the way out, the thief cuts himself (or herself) on a piece of broken glass. You are a forensic detective called to the scene. You test a sample of blood left behind by the thief. It is O-. While you are there, police bring in a suspect with a cut forearm who was arrested just three blocks from the store. You take a sample of the suspect’s blood and mix it with anti-A. You immediately know that the suspect is not the person who cut himself on the broken glass in the store. How do you know this?
3. Suppose the suspect’s blood does not agglutinate when tested with anti-A or anti-B, but does agglutinate when tested with anti-Rh. Would this connect the suspect with the crime scene? Explain your answer.
4. Tom and Jane participate in a Red Cross blood drive. Both are first-time donors. As part of the screening process, their blood is typed. Tom is A+. Jane is AB+. What blood group antibody is found in Tom’s blood?
5. Tom and Jane’s blood donations are sent to a processing center where their blood cells are separated from their plasmas. Both their separated cells and plasmas are the sent to a hospital. A blood researcher wishes to use Tom’s blood in an attempt to extract and identify the A antigen. Should she attempt the extraction process on his blood cells or on his plasma? Why?
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