PLTW Biomed Units 1-2 Final Test
Study Guide Questions and Answers
100% Pass
Hair
How was it tested?
What was the result? - ✔✔Microscopic analysis
Eric Piedmont's hair based on color, the width of the hair shaft, & absent medulla.
Fingerprints
How was it tested?
What was the result? - ✔✔Observation of ridge pattern
Eric's fingerprint was found on the handwritten note
Anna Garcia's fingerprint was found on the flask
Smartphone
How was it tested?
Brittie Donald, All Rights Reserved © 2025 1
,What was the result? - ✔✔Digital analysis
Many people had contact with ANNA prior to her death. The main points are:
-Anna had a head injury from contact with Sam
-Sam may be angry with the tone of the text.
-Dominque may be jealous and possibly angry because Anna received the scholarship.
-Eric was bothered by something.
Blood (floor and table)
How was it tested?
What was the result? - ✔✔Kastle-Meyer Test and Blood typing test
We confirmed the samples were blood
type A - the blood could have been Annas, Erics, or Dominiques
DNA (blood)
How was it tested?
What was the result? - ✔✔Gel Electrophoresis
RFLP pattern matched Anna Garcia
Handwritten Note
Brittie Donald, All Rights Reserved © 2025 2
, How was it tested?
What was the result? - ✔✔Fingerprint analysis
Showed Eric Piedmonts prints
Blowfly
How was it tested?
What was the result? - ✔✔Larva analysis
Based on the size of the larva, Anna hadn't been dead for more than 24 hours
What are the structures we look at when analyzing hair? - ✔✔cuticle
cortex
medulla
What are the main overall ridge patterns for fingerprints? - ✔✔Arch
Tented arch
Loop
Whorl
What are minutiae? - ✔✔Minutiae are tiny characteristics found on a fingerprint.
Brittie Donald, All Rights Reserved © 2025 3
Study Guide Questions and Answers
100% Pass
Hair
How was it tested?
What was the result? - ✔✔Microscopic analysis
Eric Piedmont's hair based on color, the width of the hair shaft, & absent medulla.
Fingerprints
How was it tested?
What was the result? - ✔✔Observation of ridge pattern
Eric's fingerprint was found on the handwritten note
Anna Garcia's fingerprint was found on the flask
Smartphone
How was it tested?
Brittie Donald, All Rights Reserved © 2025 1
,What was the result? - ✔✔Digital analysis
Many people had contact with ANNA prior to her death. The main points are:
-Anna had a head injury from contact with Sam
-Sam may be angry with the tone of the text.
-Dominque may be jealous and possibly angry because Anna received the scholarship.
-Eric was bothered by something.
Blood (floor and table)
How was it tested?
What was the result? - ✔✔Kastle-Meyer Test and Blood typing test
We confirmed the samples were blood
type A - the blood could have been Annas, Erics, or Dominiques
DNA (blood)
How was it tested?
What was the result? - ✔✔Gel Electrophoresis
RFLP pattern matched Anna Garcia
Handwritten Note
Brittie Donald, All Rights Reserved © 2025 2
, How was it tested?
What was the result? - ✔✔Fingerprint analysis
Showed Eric Piedmonts prints
Blowfly
How was it tested?
What was the result? - ✔✔Larva analysis
Based on the size of the larva, Anna hadn't been dead for more than 24 hours
What are the structures we look at when analyzing hair? - ✔✔cuticle
cortex
medulla
What are the main overall ridge patterns for fingerprints? - ✔✔Arch
Tented arch
Loop
Whorl
What are minutiae? - ✔✔Minutiae are tiny characteristics found on a fingerprint.
Brittie Donald, All Rights Reserved © 2025 3
