Exam 2 CHMN 201 / Quiz 2 BIBL 105/REACTION PAPER/CRM 231 – Lab Experiment A: Hairs and Fibers

Exam 2 CHMN 201

Quiz 2 BIBL 105

CRM 231 – Lab Experiment A: Hairs and Fibers

Supplies:
 Several Head Hairs (1-3 strands)
 Several Body Hairs (1-3 strands)
 Several Animal Hairs (1-3 strands)
 Several Fibers — Colored preferred (1-3 strands)
 1 – Inexpensive magnifying glass (or microscope, if you have one)
Instructions:
A. When collecting your hair samples, be sure the three of the human hair samples are “plucked” to
insure that the root is attached to the hair sample.
B. Then, take an additional sampling of “cut” human hair. If possible, obtain each of the plucked and
the cut samples from different donors. This will insure that you have a variety within your
sampling group.
C. It is best to place your hair samples on a contrasting background. For example, a black hair
should be viewed on a white paper background, and a blonde hair on a dark paper background.
D. Using your magnifying glass (or microscope if you have one), examine each sample closely. Can
you identify the following: (1) Cortex; (2) Pigment granules; (3) Cuticle; and (4) Medulla from your
sample?
E. Next, take a standard flashlight and turn it on. Place your hair samples on top of the lens as you
hold the light upward. Examine the hair sample from a side view with your magnifying glass—
does this produce any variances in color or pigment that you did not observe while examining the
hair sample on the paper background?
F. Why was it necessary to have both plucked and cut samples of hair? Does the root of the hair
have value to your microscopic examination, or will the hair root have value inother related lab
testing?
Examiners in the lab are specifically looking at the color and the width, distribution pattern of the medulla,
color and distribution pattern of pigment in the cortex, and finally the cuticle pattern. If an examiner finds a
match to each of the above characteristics, research has shown that there is a 4,500 to 1 probability that
the hair came from the donor/suspect (Royal Canadian Mounted Police, n.d.).
Directions:
Type a one to two page synopsis of your finding(s) and experience. Respond to Questions asked in
Steps D (include color and shape of the hair strands), E, and F and describe in layman terms what the
sample looked like to YOU. Submit your synopsis to the Assignment box no later than Thursday, 11:59
PM EST/EDT. (This Assignment box maybe linked to Turnitin.)
Optional: Discuss your experience with your classmates in the Lab Discussion board in the Course
Home menu.

REACTION PAPER

REACTION PAPER  2 pages, 2 sources.  Use template in Doc Sharing

PLEASE see both the Example and template IN DOC SHARING (under Content tab)

  • Follow Template in Doc sharing ( under content tab)
  • There is 2 PAGE minimum for this paper (excluding title page, abstract and references).
  • Times new Roman 12 only.
  • Turn it in scores should be less that 18 % ( excluding references)l submit paper multiple times if needed up until due date.
  • Your reaction paper this week is a response to your individual reaction to the video and the contents therein.
  • Review the author segment and provide your commentary.
  • Reaction papers require critical thinking-you are not just telling me what the content is about, but rather providing a critical evaluation and commentary about discussed  in all sections of the paper ( not just at the end paragraph) etc. Elevate your content and analysis. Tie in research in all sections of your paper.  What wasn’t discussed that could have been helpful?
  • You need to review all videos and include material from ALL videos.
  • The abstract needs to be at least 120 words.
  • Do not write in the first/second person. I very much encourage you to state your opinion without using “I”. I don’t want to see “I think, I believe, I, I, I”. What opinion is implied so there is no need to use the word “I”.

NO FIRST PERSON – REACTION PAPERS AND OPINIONS.

  • Your presentation needs to be comprehensive, thorough, and well developed
  • There is 2 PAGE minimum for this paper.
  • 2 scholarly sources must be used.
  • Since you are reviewing a video, you need to cite the video so take a look at how to cite and reference media/video content in APA.
  • Make sure that you have proper APA throughout ( in-text citations).
  • Be sure to integrate alternative sources for support.

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