Download WebQuest #1: A Murder at Midway Link http://questgarden.com/148

WebQuest #1: A Murder at Midway Link
http://questgarden.com/148/69/7/121023160101/index.htm
Read through the Introduction.
We will not be doing a powerpoint presentation, but you will be turning in a piece of paper with info and
answers.
Click on the PROCESS bar on the left side of the page.
Part 1: Researching Forensic Science Fields
1. Click on each of the four fields of Forensic Science-Entomology, Serology, Geneticist, and
Trace Evidence.
2. Write 2-3 sentences about each field, describing what they do, resources they use and how
they do it.
Scroll down and complete Steps 1 and 2, writing all your findings and evidence on a separate sheet.
Do not click on the other tabs since we will not have time to do them.
WebQuest #2 Questions
Please answer on a separate piece of paper. Due at the end of the period.
Blood Drops and Antibodies: A Forensics Murder Mystery
http://questgarden.com/73/31/2/081115120625/index.htm
Work through the webquest: read through the websites, perform the simulation, and answer the
questions below. By the end of this activity you should be able to solve the murder mystery!
Importance of the study of blood:
1.
Explain the importance of the study of blood to Forensic Science.
2.
What are some of the problems that can arise when working with blood evidence?
Collection and preservation of evidence with blood:
1.
Explain why blood evidence must be handled with care and processed quickly.
2.
Describe the process for collecting liquid specimen samples.
3.
Explain the process for collecting stained fabric samples.
4.
What are some of the sources of DNA evidence? (List a minimum of 6)
5.
Explain the difference between biological evidence that is transferred by direct deposit and by
secondary transfer.
6.
Describe the documentation process that must occur while collecting evidence.
7.
How does luminol work? How is it used? What chemical reactions are occurring?
8.
How do investigators use luminol?
Testing sample for presence of human blood:
1.
What are some of the tests for analyzing a sample for the presence of blood? What results are
you looking for in each test?
2.
When performing preliminary tests for blood, what other substances can give a false positive?
1.
What are the main components of blood (describe each component)?
2.
What is agglutination?
3.
The differences in human blood are due to the presence or absence of what?
4.
Describe each of the different groups. What is present for each one? What is absent?
5.
How do you test blood for the type? (Make sure you click on the animation to see agglutination)
6.
Why does the blood agglutinate?
7.
Who can receive blood transfusion from whom? What type do you think are known as universal
donors?? What about universal acceptors??
8.
Work through the simulation.
a. What is the blood type of the first patient? What types of blood can she receive?
Determining blood type:
b.
The second patient?
c.
The third?
On to solving the murder?.
9.
Is that sample positive for blood? How do you know
10. What are the blood types of the victim and the three suspects? Is it possible that the two blood
samples on the newspaper belong to the victim and one of the suspects? If so, which suspect? Is
this enough information to convict? Why?
11.
What does the luminol test tell you about the possible crime scene?
Good job! Now write ~10 sentences to summarize what you learned in this webquest.