BSFS General 2

Question 1

Which type of evidence is considered most reliable in establishing a suspect's presence at a crime scene?

Accepted Answer

DNA evidence

Answer

DNA evidence is highly reliable because it can uniquely identify an individual with extremely high statistical certainty.

Question 2

What is 'Locard's Exchange Principle' in forensic science?

Accepted Answer

Every contact leaves a trace between two surfaces

Answer

Locard's Exchange Principle states that whenever two objects come into contact, material is transferred between them.

Question 3

In forensic toxicology, what does a 'chain of custody' document ensure?

Accepted Answer

The integrity and accountability of a sample from collection to court

Answer

Chain of custody documentation tracks every person who handled a sample, ensuring its integrity is unbroken and legally defensible.

Question 4

What is the role of a 'control sample' in forensic laboratory analysis?

Accepted Answer

To serve as a known standard for comparison and quality assurance

Answer

A control sample with known properties confirms that analytical procedures are working correctly and results are valid.

Question 5

Which federal law governs the admissibility of scientific expert testimony in US federal courts?

Accepted Answer

The Federal Rules of Evidence (Daubert standard)

Answer

The Daubert standard, derived from Daubert v. Merrell Dow Pharmaceuticals and codified in the Federal Rules of Evidence, requires judges to assess the scientific validity of expert testimony.

BSFS - Bachelor of Science in Forensic Science Practice Test

BSFS - Bachelor of Science in Forensic Science Practice Test

BSFS General 2