ETC Item Collection

Question 1

What is the first step when collecting physical evidence at a crime scene?

Accepted Answer

Photograph and document it in place

Answer

The first and most crucial step when collecting physical evidence at a crime scene is to photograph and document it in its original location before any disturbance. This preserves the context, spatial relationship, and condition of the evidence. This meticulous documentation is vital for accurate reconstruction of the crime scene and maintaining the integrity of the evidence for legal proceedings.

Question 2

Which container is best for collecting wet biological evidence?

Accepted Answer

Paper bag

Answer

Wet biological evidence, such as blood or tissue, should be collected in a breathable container like a paper bag. This allows the evidence to air dry naturally, preventing the growth of mold and bacteria that can degrade DNA and other biological material. Plastic bags or sealed containers trap moisture, which can lead to spoilage and compromise the evidence's integrity.

Question 3

Why is proper labeling of evidence important?

Accepted Answer

To ensure identification and tracking

Answer

Proper labeling is crucial for maintaining the integrity and admissibility of evidence in court. It ensures that each item can be uniquely identified, linked to the correct case, and tracked throughout its journey from collection to analysis and presentation. Accurate labels prevent mix-ups and provide a clear audit trail, establishing the evidence's authenticity.

Question 4

What should be worn when handling evidence to avoid contamination?

Accepted Answer

PPE such as gloves and masks

Answer

Wearing Personal Protective Equipment (PPE) like gloves and masks is essential when handling evidence to prevent contamination. Gloves protect the evidence from the handler's DNA, fingerprints, and other biological material, while masks prevent respiratory droplets from contaminating the scene or evidence. This practice safeguards the integrity of the evidence for forensic analysis and ensures its admissibility.

Question 5

What is the purpose of maintaining a chain of custody?

Accepted Answer

To ensure evidence integrity in court

Answer

Maintaining a chain of custody is vital to prove that evidence presented in court is the same evidence collected at the crime scene and has not been tampered with. It documents every person who handled the evidence, when they handled it, and for what purpose. This unbroken record establishes the authenticity and integrity of the evidence, making it admissible in legal proceedings.

(ETC) Evidence Technician Certification Practice Test

(ETC) Evidence Technician Certification Practice Test

ETC Item Collection