SFST Alcohol Influence and Physiological Effects 1 — Questions and Answers
Question 1: What does BAC stand for in the context of DUI enforcement?
- Blood Alcohol Concentration (Correct answer)
- Body Alcohol Content
- Blood Alcohol Component
- Breath Alcohol Calculation
Correct answer: Blood Alcohol Concentration
BAC stands for Blood Alcohol Concentration, which measures the amount of alcohol in a person's bloodstream expressed as a percentage.
Question 2: In most U.S. states, the per se BAC limit for non-commercial adult drivers is:
- 0.05%
- 0.10%
- 0.08% (Correct answer)
- 0.06%
Correct answer: 0.08%
The federally encouraged and most widely adopted per se BAC limit for adult non-commercial drivers in the U.S. is 0.08%.
Question 3: Which organ is primarily responsible for metabolizing alcohol in the human body?
- Kidneys
- Liver (Correct answer)
- Stomach
- Pancreas
Correct answer: Liver
The liver is the primary organ responsible for metabolizing approximately 90–95% of consumed alcohol through enzymatic processes.
Question 4: Approximately how long does it take the average adult liver to metabolize one standard drink?
- 30 minutes
- 45 minutes
- One hour (Correct answer)
- Two hours
Correct answer: One hour
On average, the human liver metabolizes alcohol at a rate of approximately one standard drink per hour, though this varies by individual.
Question 5: Based on its effects on the central nervous system, alcohol is classified as which type of drug?
- Stimulant
- Hallucinogen
- Narcotic
- Depressant (Correct answer)
Correct answer: Depressant
Alcohol is a central nervous system depressant that slows brain function and neural activity, impairing judgment, coordination, and reaction time.
Question 6: Which of the following factors does NOT affect an individual's BAC level?
- Body weight
- Rate of consumption
- Eye color (Correct answer)
- Food in the stomach
Correct answer: Eye color
Eye color has no physiological relationship to how alcohol is absorbed or metabolized; BAC is influenced by weight, consumption rate, food, and gender.
Question 7: A 'per se' DUI law means that a driver can be convicted because:
- An officer observed clear signs of impairment
- The driver's BAC meets or exceeds the legal limit, regardless of observable impairment (Correct answer)
- Chemical test results were confirmed by a second test
- The driver admitted to consuming alcohol
Correct answer: The driver's BAC meets or exceeds the legal limit, regardless of observable impairment
A per se law makes it illegal to drive at or above the specified BAC level automatically, without requiring separate proof of actual impairment.
SFST Alcohol Influence and Physiological Effects 1
What does BAC stand for in the context of DUI enforcement?