DRE FINAL EXAM COMPLETE
QUESTIONS WITH 100% CORRECT
ANSWERS
1. Which of the following drugs will usually cause the pupils to dilate?
A. Xanax
B. Ketamine
C. Thorazine
D. Codeine
E. Cocaine - Correct. Cocaine is a CNS stimulant that blocks the reuptake
of norepinephrine, producing a sympathomimetic effect including
mydriasis (pupil dilation). Xanax, Ketamine, Thorazine, and Codeine
either constrict or have variable effects.
2. The part of the nerve cells that sends the neurotransmitter is the
_______.
A. neuron
B. axon - Correct. The axon is the long projection of a nerve cell that
conducts electrical impulses away from the cell body and releases
neurotransmitters from the terminal buttons into the synapse.
C. dendrite
,D. synapse
E. nucleus
3. In the 1985 Los Angeles Field Study, slightly more than ___ percent
of subjects evaluated were found to have more than one drug in
them.
A. 40
B. 50
C. 60
D. 70 - *Correct. The study found that 71% of impaired drivers had
multiple drugs present, highlighting the importance of poly-drug
recognition for DREs.*
E. 80
4. A subject being examined has a BAC of .13 and has also smoked
Marijuana laced with Crack. At approximately what onset angle would
you expect to observe HGN in that subject's eyes?
A. 10
B. 25-30
C. 35-40 - *Correct. Alcohol alone at .13 would cause HGN onset around
35-40 degrees. Cannabis does not cause HGN, and crack (stimulant)
does not cause HGN, so no overlapping effect changes the expected
onset.*
D. 45-50
E. 55-60
5. A subject who is under the influence of a CNS Depressant will
usually have a body temperature that is closest to __________
A. 95.0
B. 96.8
,C. 97.2
D. 98.6 - Correct. CNS Depressants typically do not significantly alter
body temperature; it remains within normal range (98.6°F).
Hypothermia is possible in overdose but not typical.
E. 99.9
6. The drug Adderall is ______________
A. CNS Depressant
B. analog of PCP
C. Hallucinogen
D. synthetic form of THC
E. CNS Stimulant - Correct. Adderall is a brand name for mixed
amphetamine salts, a potent CNS stimulant used to treat ADHD and
narcolepsy.
7. Which of the following DRE drug categories does NOT cause
nystagmus?
A. Secobarbital
B. Marijuana - Correct. Marijuana (Cannabis) typically does NOT cause
nystagmus. It may cause lack of convergence, but horizontal, vertical, or
rebound nystagmus are not characteristic.
C. Librium
D. PCP
E. Alcohol
8. The chemical name for Heroin is
A. Trimethyl Morphine
B. Morphine Sulfate
C. Hydrochloric Morphine
D. Morphine Acetate
, E. Diacetyl Morphine - Correct. Heroin is synthesized by acetylating
morphine, resulting in diacetylmorphine.
9. The abbreviation PCP stands for __
A. Phencyclophil
B. Phenyl Cyclohexy Piperidine - Correct. Phencyclidine (PCP) is a
dissociative anesthetic with the chemical structure
phenylcyclohexylpiperidine.
C. Propyl cenylphine piperdexlyhide
D. Pepsidine cocoa pedadyne
E. Phencyclopines
10. What formula expresses the approximate statistical relationship
with blood alcohol concentration and nystagmus onset angle?
A. BAC - 50 = Angle of onset
B. BAC - Angle of onset = 50
C. Angle of onset - 50 = BAC
D. Angle of onset - BAC = 50
E. BAC = 50 - Angle of onset - *Correct. The formula is approximate:
BAC = 50 - onset angle (in degrees). For example, onset at 40° suggests
BAC ≈ 0.10.*
11. When testifying as a DRE, it helps the case to ____________
A. indicate in your testimony that you were able to form an opinion
before the examination was completed
B. bring your DRE manual into court for reference
C. testify on subject matter excluded by the court
D. use little detail when answering "why" questions
E. relate your training and experience to the specific categories of
QUESTIONS WITH 100% CORRECT
ANSWERS
1. Which of the following drugs will usually cause the pupils to dilate?
A. Xanax
B. Ketamine
C. Thorazine
D. Codeine
E. Cocaine - Correct. Cocaine is a CNS stimulant that blocks the reuptake
of norepinephrine, producing a sympathomimetic effect including
mydriasis (pupil dilation). Xanax, Ketamine, Thorazine, and Codeine
either constrict or have variable effects.
2. The part of the nerve cells that sends the neurotransmitter is the
_______.
A. neuron
B. axon - Correct. The axon is the long projection of a nerve cell that
conducts electrical impulses away from the cell body and releases
neurotransmitters from the terminal buttons into the synapse.
C. dendrite
,D. synapse
E. nucleus
3. In the 1985 Los Angeles Field Study, slightly more than ___ percent
of subjects evaluated were found to have more than one drug in
them.
A. 40
B. 50
C. 60
D. 70 - *Correct. The study found that 71% of impaired drivers had
multiple drugs present, highlighting the importance of poly-drug
recognition for DREs.*
E. 80
4. A subject being examined has a BAC of .13 and has also smoked
Marijuana laced with Crack. At approximately what onset angle would
you expect to observe HGN in that subject's eyes?
A. 10
B. 25-30
C. 35-40 - *Correct. Alcohol alone at .13 would cause HGN onset around
35-40 degrees. Cannabis does not cause HGN, and crack (stimulant)
does not cause HGN, so no overlapping effect changes the expected
onset.*
D. 45-50
E. 55-60
5. A subject who is under the influence of a CNS Depressant will
usually have a body temperature that is closest to __________
A. 95.0
B. 96.8
,C. 97.2
D. 98.6 - Correct. CNS Depressants typically do not significantly alter
body temperature; it remains within normal range (98.6°F).
Hypothermia is possible in overdose but not typical.
E. 99.9
6. The drug Adderall is ______________
A. CNS Depressant
B. analog of PCP
C. Hallucinogen
D. synthetic form of THC
E. CNS Stimulant - Correct. Adderall is a brand name for mixed
amphetamine salts, a potent CNS stimulant used to treat ADHD and
narcolepsy.
7. Which of the following DRE drug categories does NOT cause
nystagmus?
A. Secobarbital
B. Marijuana - Correct. Marijuana (Cannabis) typically does NOT cause
nystagmus. It may cause lack of convergence, but horizontal, vertical, or
rebound nystagmus are not characteristic.
C. Librium
D. PCP
E. Alcohol
8. The chemical name for Heroin is
A. Trimethyl Morphine
B. Morphine Sulfate
C. Hydrochloric Morphine
D. Morphine Acetate
, E. Diacetyl Morphine - Correct. Heroin is synthesized by acetylating
morphine, resulting in diacetylmorphine.
9. The abbreviation PCP stands for __
A. Phencyclophil
B. Phenyl Cyclohexy Piperidine - Correct. Phencyclidine (PCP) is a
dissociative anesthetic with the chemical structure
phenylcyclohexylpiperidine.
C. Propyl cenylphine piperdexlyhide
D. Pepsidine cocoa pedadyne
E. Phencyclopines
10. What formula expresses the approximate statistical relationship
with blood alcohol concentration and nystagmus onset angle?
A. BAC - 50 = Angle of onset
B. BAC - Angle of onset = 50
C. Angle of onset - 50 = BAC
D. Angle of onset - BAC = 50
E. BAC = 50 - Angle of onset - *Correct. The formula is approximate:
BAC = 50 - onset angle (in degrees). For example, onset at 40° suggests
BAC ≈ 0.10.*
11. When testifying as a DRE, it helps the case to ____________
A. indicate in your testimony that you were able to form an opinion
before the examination was completed
B. bring your DRE manual into court for reference
C. testify on subject matter excluded by the court
D. use little detail when answering "why" questions
E. relate your training and experience to the specific categories of
