BSFS Bachelor of Science in Forensic Science 4

Question 1

Which reagent is commonly used at crime scenes to detect latent bloodstains on surfaces that have been cleaned?

Accepted Answer

Luminol

Answer

Luminol reacts with the iron in hemoglobin to produce chemiluminescence, revealing traces of blood even after a surface has been cleaned.

Question 2

In forensic entomology, what is the 'minimum postmortem interval' (mPMI)?

Accepted Answer

The earliest time since death indicated by insect activity on a body

Answer

The minimum postmortem interval is the earliest estimated time of death based on the most developed stage of insect found on a body.

Question 3

What is the significance of the Daubert standard in US forensic science?

Accepted Answer

It establishes criteria for judges to evaluate the admissibility of scientific expert testimony

Answer

The Daubert standard, established by the Supreme Court in 1993, requires judges to act as gatekeepers evaluating scientific testimony based on factors like peer review, error rate, and general acceptance.

Question 4

Which type of glass fracture pattern indicates the direction of force applied?

Accepted Answer

All of the above contribute to directionality analysis

Answer

Forensic glass analysis uses radial and concentric fracture patterns together with hackle marks and rib marks to determine the direction and sequence of impacts.

Question 5

What analytical technique is most appropriate for comparing paint chips recovered from a hit-and-run vehicle?

Accepted Answer

Polarized light microscopy and scanning electron microscopy with EDX

Answer

Polarized light microscopy examines layer structure, while SEM-EDX provides elemental composition of paint pigments, allowing detailed comparison of paint chip samples.

BSFS - Bachelor of Science in Forensic Science Practice Test

BSFS - Bachelor of Science in Forensic Science Practice Test

BSFS Bachelor of Science in Forensic Science 4