ETC ETC Laboratory Analysis & Forensic Science 2

Question 1

Which microscopy technique is used to compare tool marks and bullet striations in forensic firearm analysis?

Accepted Answer

Comparison microscopy

Answer

Scanning electron microscopy

Answer

Phase contrast microscopy

Answer

Darkfield microscopy

Question 2

What is the significance of a 'blank' sample in forensic laboratory analysis?

Accepted Answer

It detects contamination by confirming no target substances are in the testing environment

Answer

It represents an unknown sample from the crime scene

Answer

It serves as a duplicate of the primary evidence sample

Answer

It calibrates the weight of the evidence package

Question 3

Forensic DNA analysis uses STR (Short Tandem Repeat) profiling. How many STR loci does CODIS analyze?

Accepted Answer

20 core loci

Answer

10 core loci

Answer

5 core loci

Answer

15 core loci

Question 4

Which type of forensic analysis examines the unique characteristics of handwriting to compare questioned documents?

Accepted Answer

Questioned document examination (QDE)

Answer

Latent print analysis

Answer

Trace evidence analysis

Answer

Ballistic fingerprinting

Question 5

What laboratory accreditation standard do most US forensic labs seek to ensure quality and competency?

Accepted Answer

ASCLD/LAB or ISO/IEC 17025 accreditation

Answer

FDA Good Laboratory Practice (GLP)

Answer

Joint Commission accreditation

Answer

OSHA 1910 compliance certification

Question 6

An evidence technician recovers a projectile from a crime scene. Which lab discipline would perform the analysis?

Accepted Answer

Firearm and toolmark examination

Answer

Trace evidence analysis

Answer

Serology

Answer

Toxicology