4.06 Lab
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Lab 1
1.Which of the three types of fingerprints was the fingerprint that you examined (loop, arch, or whorl)? Within that print, what minutiae did you see?
- Whorl, and a core and a delta.
2. Compare the print of your helper with your own. Describe the similarities and differences between the two fingerprints.
- Loop, and we both have a core, but she has an island.
3. Imagine that you are Alphonse Bertillon and you are trying to explain why you think fingerprints can be so useful to help solve crimes. What would you say to persuade them? Pretend you are explaining to someone who has never noticed fingerprints or thought about what they are.
- A fingerprint may be small and unnoticeable to the eye, and even look like many other peoples, but they are in fact very different. Every fingerprint has a different pattern that is unique and unlike anyone else’s. I compared two fingerprints and found that they may look alike from afar, but up close one goes one way, while the other does something else and completely different.
Lab 2
1. Name and describe the four main components of blood.
- Red blood cells: contain hemoglobin, a protein that binds oxygen,
White blood cells: fight infection
Platelets: help the blood to clot, if you get a wound for example
Plasma: contains salts and various kinds of proteins.
2. What antigens and antibodies determine blood type? What are the antigens made of?
- B antigen, Rh antibody, A anti body, A antigen
3. How is blood type determined? What happens if someone is given the wrong type of blood in a blood transfusion?
- By what type of antigens and antibodies are in their blood. And they can die.
4. Explain how you did in the game?
- I did not do very well. I wasn’t sure what I was doing so I kind of just went with it.
Lab 3
1. What common misconception does the law enforcement course on creating blood spatters dispel?
- That blood splatters always mean the same thing.
2. What is the maximum speed that blood can travel? What can be learned from the shape of the drop?
- 25.1 feet. What happened and how a weapon was used.
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