Trace Evidence Practcie Quiz 2

When transporting fiber evidence to a laboratory, it is most appropriate to use plastic bags to preserve its integrity.

• true

• false

A paint chip was collected as evidence from a crime scene involving a damaged vehicle. Which source is most likely associated with this type of paint?

• • Car surfaces

• • House walls

• • Wooden furniture

• • Sporting equipment

• • None of these options

The pigments found in both hair and paint are primarily responsible for determining the ______ of the material.

• Texture

• Strength

• Color

• Glossiness

Tags

NGSS.HS-PS4-5

Forensic scientists often compare paint samples by examining their color and layer structure using which tool?

• 3D microscope

• Electron microscope

• Handheld magnifier

• Stereoscopic (dissecting) microscope

Animal hair typically has a medulla that is larger in diameter compared to human hair.

• true

• false

The ratio used to compare the width of the medulla to the overall diameter of the hair shaft is known as the ______.

Match the letter to the medulla pattern.

• C

• continuous; most likely animal hair

• D

• interupted

• E

• absent

• A

• fragmented

• B

• continuous; most likely humn hair

Tags

NGSS.MS-LS3-1

The layer of translucent tissue found near the root of a hair sample, often useful for forensic DNA analysis, is called the ______.

• Root bulb

• Follicular tag

• Cortex layer

• Medulla

To determine the unique identity of a hair sample, forensic scientists analyze its follicular tag using ______.

• Nuclear DNA testing

• UV light spectrometry

• Mitochondrial DNA sequencing

• Gas chromatography

Which tool would a forensic analyst use to compare the physical characteristics of two hair samples, such as medulla structure and scale patterns?

• Dissecting microscope

• Compound light microscope

• Handheld magnifier

• Comparison microscope