Download Unit 6 Review - CSI: Coronado

Unit 6 Review—Blood
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What is the name of the cohesive force that holds blood in a spherical shape as it falls?
What is a satellite?
When analyzing blood drops, what it the most important variable to consider?
What type of surface causes blood drops to hold together? What type of surface causes
blood drops to break apart?
5. Describe how the shape of a blood drop can indicate the distance from which it fell and
the angle of impact.
6. How do you determine the point of convergence?
7. Given the dimensions of a blood drop and distance from the drop to the point of
convergence, be able to determine the height from which the blood drop fell.
Example: A drop of blood found at a crime scene measures 5 mm by 15 mm. The point of
convergence is found to be 120 cm away. At what height, in cm, was the wound that
caused the blood droplet? What is the height in ft?
8. What is the composition of blood?
9. Name and describe the 3 types of blood cells.
10. What are the 3 different blood alleles? Which are dominant and which are recessive?
11. What are the 4 possible blood phenotypes? What are the 6 possible genotypes?
12. Be able to use a Punnett square to determine the possible blood types of the children,
given the blood types of the parents.
Example: A woman who is heterozygous for Type A blood has a child with a man who is
heterozygous for Type B blood. What are the possible genotypes and phenotypes of their
child?
13. For the ABO system, know which antigens and antibodies are found in each type, which
type(s) of blood they can receive and to which blood type(s) they can donate.
14. Be able to determine the probability of blood types.
Example: What is the probability of a person having blood type A and S and
being Rh-?
15. What is the Kastle-Meyer Test used for? What is the reaction that takes place?
16. What is meant by a presumptive test?
17. What is luminol? How does it work?