Forensic Science Chapter 12 Exam Questions with Verified Answers Latest Update 2024

Forensic Science Chapter 12 Exam Questions with Verified Answers Latest Update 2024 Upon entering the bloodstream, heroin is almost immediately metabolized into: A. Morphine. .B. Procaine. C. Opium. D. Cocaine. - Answers A. Morphine. The toxicologist's capabilities are NOT directly dependent on the input from the: A. Attending physician. B. Case prosecutor. .C. Medical examiner. D. Police. - Answers B. Case prosecutor. The concentration of a drug present in urine is a poor indicator of how extensively an individual's behavior or state is influenced by the drug. T/F - Answers True Of the following, which is an acid drug? A. Cocaine B. PCP C. Methadone D. Aspirin - Answers D. Aspirin About 95-98 percent of alcohol is oxidized to what two substances? A. Acetaldehyde and acetic acid B. Water and acetic acid C. Water and carbon dioxide D. Carbon dioxide and dehydrogenase - Answers C. Water and carbon dioxide The quantity and type of food present in the stomach at the time of drinking does not affect the rate at which alcohol is absorbed. T/F - Answers False Field sobriety tests that can be employed to ascertain the degree of an individual's alcohol impairment normally do not include the following: A. Portable, roadside breath tester. B. Walk and turn. C. Horizontal gaze nystagmus. D. Gas chromatography. - Answers D. Gas chromatography. Field sobriety tests do NOT include: A. Performance of sit ups. B. Horizontal gaze nystagmus. C. Walk and turn. D. One leg stand. - Answers A. Performance of sit ups. The DOT set the maximum allowable blood alcohol concentration for commercial truck and bus drivers at: A. 0.04%. .B. 0.02%. C. 0.08%. D. 0.05%. - Answers A. 0.04%. Which of the following, if blood is not available, can the medical examiner NOT use in order to determine the body's alcohol content to a reasonable degree of accuracy? A. Brain tissue B. Urine .C. Cerebrospinal fluid D. Vitreous humor - Answers B. Urine The implied-consent law allows the operator of a motor vehicle on a public highway to refuse a test for alcohol intoxication. T/F - Answers False The elimination or "burn off" rate of alcohol averages ________ percent w/v per hour. A. 0.10 B. 0.015 C. 0.15 D. None of the above - Answers B. 0.015 Carbon monoxide is toxic because it: A. Causes platelets to clump. B. Combines with hemoglobin to form carboxyhemoglobin. C. Activates killer white blood cells. D. Destroys red blood cells. - Answers B. Combines with hemoglobin to form carboxyhemoglobin. When the blood enters the lungs, it contains very little oxygen and a great deal of carbon dioxide. T/F - Answers True A screening test gives quick insight into the likelihood that a specimen contains a drug substance while a confirmation test identifies a specific drug. T/F - Answers True An alcoholic disinfectant should be applied to a subject's skin before drawing blood. T/F - Answers False The three most widely used screening tests are thin-layer chromatography (TLC), gas chromatography (GC), and liquid chromatography (LC). T/F - Answers False Alcohol tends to be distributed throughout the watery parts of the body. T/F - Answers True For a longer total time required for complete absorption, the peak blood-alcohol concentration will be lower. T/F - Answers True Which of the following drugs is not found in blood or urine? A. Methadone B. Heroin .C. Morphine D. Amphetamine - Answers B. Heroin A neutral substance will have a pH closest to: A. 0. B. 7. .C. 2. D. 5. - Answers B. 7. Lead is not classified as a heavy metal. T/F - Answers True Of the following, which country has the lowest blood alcohol concentration in determining legal impairment level? A. France B. United States C. Sweden D.