Texas Forensic Analyst Licensing FOR SCIENCE
PROFESSIONALS EXAM PRACTICE TEST QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES | INSTANT DOWNLOAD PDF
1. Which of the following is a primary responsibility of a forensic analyst?
A. Drafting legal contracts
B. Collecting, preserving, and analyzing evidence
C. Representing clients in court
D. Managing police patrol schedules
Correct answer: B. Collecting, preserving, and analyzing evidence – Forensic analysts are
responsible for handling evidence and providing objective analysis, not legal representation or
administrative tasks.
2. Chain of custody refers to:
A. The process of collecting evidence
B. Documenting the handling of evidence from collection to presentation in court
C. Storage of evidence in a laboratory
D. The sequence of lab experiments
Correct answer: B. Documenting the handling of evidence from collection to presentation in
court – Maintaining chain of custody ensures evidence integrity and admissibility in court.
3. Which of the following techniques is used for DNA analysis?
A. Polymerase Chain Reaction (PCR)
B. Gas Chromatography (GC)
C. Atomic Absorption Spectroscopy
D. Thin Layer Chromatography
,Correct answer: A. Polymerase Chain Reaction (PCR) – PCR amplifies DNA, allowing forensic
analysts to examine genetic material from samples.
4. The primary purpose of a presumptive test for blood is to:
A. Confirm the species origin of blood
B. Indicate the possible presence of blood
C. Identify the exact DNA profile
D. Measure the blood alcohol content
Correct answer: B. Indicate the possible presence of blood – Presumptive tests are quick, initial
tests that suggest the presence of blood, but confirmatory tests are needed.
5. Latent fingerprints are:
A. Visible prints left in blood
B. Invisible prints left on surfaces
C. Prints from synthetic materials
D. Only found on metal surfaces
Correct answer: B. Invisible prints left on surfaces – Latent fingerprints require development
techniques to become visible for analysis.
6. Which of the following is a critical component in forensic toxicology analysis?
A. Examining hair color
B. Identifying drugs or toxins in biological samples
C. Estimating time of death
D. Determining soil composition
Correct answer: B. Identifying drugs or toxins in biological samples – Toxicologists analyze blood,
urine, or tissue to detect chemical substances.
7. The Locard Exchange Principle states that:
A. All crimes leave behind witnesses
B. Every contact leaves a trace
C. Only fingerprints are useful evidence
D. Evidence must be photographed before collection
, Correct answer: B. Every contact leaves a trace – This principle underpins forensic analysis by
asserting that perpetrators leave traces at crime scenes.
8. Which method is commonly used to analyze controlled substances in a forensic lab?
A. High-Performance Liquid Chromatography (HPLC)
B. Infrared Spectroscopy
C. Gas Chromatography-Mass Spectrometry (GC-MS)
D. All of the above
Correct answer: D. All of the above – HPLC, IR spectroscopy, and GC-MS are all techniques used
for drug identification and quantification.
9. Toxicology results must always consider:
A. The chain of custody
B. Metabolism and time of sample collection
C. Possible contamination
D. All of the above
Correct answer: D. All of the above – Accurate interpretation depends on proper handling,
timing, and avoidance of contamination.
10. Forensic serology primarily involves:
A. DNA sequencing
B. Blood and body fluid identification
C. Fingerprint development
D. Ballistic analysis
Correct answer: B. Blood and body fluid identification – Serology focuses on identifying bodily
fluids to link suspects to crime scenes.
11. A presumptive test for drugs is:
A. Definitive and admissible in court
B. Quick, indicating possible presence but requiring confirmation
C. Only used for narcotics
D. Used to determine toxicity levels
PROFESSIONALS EXAM PRACTICE TEST QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES | INSTANT DOWNLOAD PDF
1. Which of the following is a primary responsibility of a forensic analyst?
A. Drafting legal contracts
B. Collecting, preserving, and analyzing evidence
C. Representing clients in court
D. Managing police patrol schedules
Correct answer: B. Collecting, preserving, and analyzing evidence – Forensic analysts are
responsible for handling evidence and providing objective analysis, not legal representation or
administrative tasks.
2. Chain of custody refers to:
A. The process of collecting evidence
B. Documenting the handling of evidence from collection to presentation in court
C. Storage of evidence in a laboratory
D. The sequence of lab experiments
Correct answer: B. Documenting the handling of evidence from collection to presentation in
court – Maintaining chain of custody ensures evidence integrity and admissibility in court.
3. Which of the following techniques is used for DNA analysis?
A. Polymerase Chain Reaction (PCR)
B. Gas Chromatography (GC)
C. Atomic Absorption Spectroscopy
D. Thin Layer Chromatography
,Correct answer: A. Polymerase Chain Reaction (PCR) – PCR amplifies DNA, allowing forensic
analysts to examine genetic material from samples.
4. The primary purpose of a presumptive test for blood is to:
A. Confirm the species origin of blood
B. Indicate the possible presence of blood
C. Identify the exact DNA profile
D. Measure the blood alcohol content
Correct answer: B. Indicate the possible presence of blood – Presumptive tests are quick, initial
tests that suggest the presence of blood, but confirmatory tests are needed.
5. Latent fingerprints are:
A. Visible prints left in blood
B. Invisible prints left on surfaces
C. Prints from synthetic materials
D. Only found on metal surfaces
Correct answer: B. Invisible prints left on surfaces – Latent fingerprints require development
techniques to become visible for analysis.
6. Which of the following is a critical component in forensic toxicology analysis?
A. Examining hair color
B. Identifying drugs or toxins in biological samples
C. Estimating time of death
D. Determining soil composition
Correct answer: B. Identifying drugs or toxins in biological samples – Toxicologists analyze blood,
urine, or tissue to detect chemical substances.
7. The Locard Exchange Principle states that:
A. All crimes leave behind witnesses
B. Every contact leaves a trace
C. Only fingerprints are useful evidence
D. Evidence must be photographed before collection
, Correct answer: B. Every contact leaves a trace – This principle underpins forensic analysis by
asserting that perpetrators leave traces at crime scenes.
8. Which method is commonly used to analyze controlled substances in a forensic lab?
A. High-Performance Liquid Chromatography (HPLC)
B. Infrared Spectroscopy
C. Gas Chromatography-Mass Spectrometry (GC-MS)
D. All of the above
Correct answer: D. All of the above – HPLC, IR spectroscopy, and GC-MS are all techniques used
for drug identification and quantification.
9. Toxicology results must always consider:
A. The chain of custody
B. Metabolism and time of sample collection
C. Possible contamination
D. All of the above
Correct answer: D. All of the above – Accurate interpretation depends on proper handling,
timing, and avoidance of contamination.
10. Forensic serology primarily involves:
A. DNA sequencing
B. Blood and body fluid identification
C. Fingerprint development
D. Ballistic analysis
Correct answer: B. Blood and body fluid identification – Serology focuses on identifying bodily
fluids to link suspects to crime scenes.
11. A presumptive test for drugs is:
A. Definitive and admissible in court
B. Quick, indicating possible presence but requiring confirmation
C. Only used for narcotics
D. Used to determine toxicity levels
