PLTW Biomed Units 1-2 Final Test Study Guide UPDATED ACTUAL Exam Questions and CORRECT Answers

PLTW Biomed Units 1-2 Final Test Study
Guide UPDATED ACTUAL Exam Questions
and CORRECT Answers
Hair
How was it tested?

What was the result? - CORRECT ANSWER - 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? - CORRECT ANSWER - 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?

What was the result? - CORRECT ANSWER - 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? - CORRECT ANSWER - 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? - CORRECT ANSWER - Gel Electrophoresis
RFLP pattern matched Anna Garcia


Handwritten Note
How was it tested?

What was the result? - CORRECT ANSWER - Fingerprint analysis
Showed Eric Piedmonts prints


Blowfly
How was it tested?

What was the result? - CORRECT ANSWER - 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? - CORRECT ANSWER - cuticle
cortex
medulla


What are the main overall ridge patterns for fingerprints? - CORRECT ANSWER - Arch
Tented arch
Loop
Whorl


What are minutiae? - CORRECT ANSWER - Minutiae are tiny characteristics found on a
fingerprint.