What is the percentage of evidence evaluated in the crime lab that is drug-related?
75%
The pattern and intensity of dependency on a drug does NOT depend on the:
Cost of the drug.
Use of which of the following drugs is LEAST likely to lead to psychological dependence?
Codeine.
Which physical symptom is part of the abstinence syndrome?
Hallucinations
Body chills
Stomach cramps and vomiting
Convulsions
ALL OF THE ABOVE
The use of which drug will NOT lead to physical dependence?
Cocaine.
Most narcotics are:
Physically addicting
Depressants to the central nervous system
Pain relievers
Obtained from opium
ALL OF THE ABOVE
Which of the following is NOT derived from opium?
Marijuana.
Which substance is NOT normally used as a diluent of heroin?
Glucose.
What is NOT true about codeine?
It is stronger than morphine.
What is the most widely used illicit drug in the United States today?
Marijuana.
Which drug is often incorrectly classified as a narcotic?
Marijuana.
Which part of cannabis contains the LEAST amount of THC?
Seeds.
What is the most potent form of marijuana?
Liquid hashish.
Marijuana has a potential use in which medical application.
Useful as a muscle relaxant
Reduction of excessive eye pressure in glaucoma
Lessening of nausea caused by anticancer drugs
ALL OF THE ABOVE
The administration of which drug eliminates an addict's desire for heroin?
Methadone.
Which is NOT an effect of marijuana use?
Decrease in appetite for sweets.
Which hallucinogen can be synthesized by a simple chemical process and is often manufactured in clandestine laboratories?
PCP.
Which of the following is the most widely used and abused?
Alcohol.
Which barbiturate is absorbed more slowly than the others?
Phenobarbital.
Barbiturates act to:
Suppress central nervous system functions
Produce sleep
Promote relaxation
Create a feeling of well-being
ALL OF THE ABOVE
Which statement is TRUE of the use of mild tranquilizers?
They reduce tension.
The sniffing of volatile solvents can cause:
Feelings of exhilaration and euphoria
Slurred speech and double vision
Liver, heart, and brain damage
Drowsiness and stupor
ALL OF THE ABOVE
Methamphetamine is a:
Stimulant.
Cocaine is a(n):
Stimulant.
Most often, cocaine is:
Snorted.
The most difficult drug addiction to overcome is that of:
Crack cocaine.
What is TRUE about the "club drug" Rohypnol?
It can cause drowsiness, dizziness, and loss of consciousness.
It is odorless, colorless, and tasteless
It results in loss of memory of what happened in the hours after ingestions
It is enhanced when combined with alcohol
ALL OF THE ABOVE
MDMA (Ecstasy) does NOT cause:
Increased inhibition.
What is NOT true of the use of anabolic steroids?
They can greatly enhance strength and general athletic performance.
The Controlled Substance Act established five schedules of classification for substances based on a drug's:
Potential for psychological dependence
Potential for abuse
Potential for physical dependence
Medical value
ALL OF THE ABOVE
Designer" drugs are:
Chemically related to controlled substances.
The Marquis reagent was used on drug evidence and it turned purple. The drug being tested could be:
Heroin.
The Dillie-Koppanyi reagent is useful in screening for:
Barbiturates.
Duquenois-Levine solutions were used on a sample and the chloroform layer turned purple. This suggests that the tested substance is:
Marijuana.
The Van Urk reagent was used to test a sample and it turned bluish-purple. This indicates the presence of:
LSD.
Scott Test solutions can indicate the presence of:
Cocaine.
The specificity of microcrystalline tests is __________ the specificity of color tests.
Greater than.
Which type of test would logically be used first by the drug analyst?
Color.
The ability to make a positive identification of a drug using UV spectrophotometry is __________ the ability to make a positive identification using IR spectrophotometry.
Less than.
Which techniques allows for both separation and specific identification of a questioned mixture of substances?
GC/MS.
Which chromatographic process would be LEAST likely to be utilized in the crime lab?
Paper chromatography.
TLC uses __________ as its moving phase.
Liquid.
Spectrophotometry can be used for:
Chemical identification of a substance.
Quantification of a substance.
BOTH A AND B
Spectrophotometry utilizes which light source?
Visible
Infrared
UV
ALL OF THE ABOVE
Which absorption spectrum is equivalent to a "fingerprint" of a substance?
IR.
Which of the following is NOT a part of a simple spectrophotometer?
Column.
A big drawback of gas chromatography is that it does not produce specific identification. This problem is overcome by connecting the GC to a:
MS.
The quantity of a substance separated by gas chromatography can be determined by its:
Peak area.
The details of the pattern of an infrared (IR) spectrograph are __________ the details of an ultraviolet (UV) spectrograph.
Greater than.
Marijuana is considered to be a:
Hallucinogen.
Drugs deemed to have the highest potential for abuse and having a current medical use are listed in which schedule of the Controlled Substances Act?
II.
There is a significant likelihood that continued use of __________ will result in a high degree of psychological dependence.
Cocaine
Amphetamines
Heroin
Marijuana
ALL OF THE ABOVE
Regular use of which drug may lead to physical dependency?
Ethyl alcohol.
Which of the following is NOT a stimulant?
Ethyl alcohol.
Heroin is a chemical derivative of:
Morphine.
Which of the following is synthetically produced and does NOT occur naturally?
Amphetamine.
Which of the following is NOT a depressant
Ethyl alcohol
Valium
Librium
Methaqualone
ALL OF THE ABOVE ARE DEPRESSANTS
Which of the following statements is FALSE?
Marijuana is synthesized from the Cannabis sinsemilla plant.
Which of the following is considered to be a hallucinogen?
Mescaline
Psilocybin
Phencyclidine (PCP)
STP
ALL OF THE ABOVE
The tranquilizers Valium and Librium are classified in which schedule of the Controlled Substances Act?
IV.
Which of the following are considered to be "club drugs?
GHB
Rohypnol
MDMA
Ketamine
ALL OF THE ABOVE
What is the difference between a screening test and a confirmation test?
A screening test is used to reduce the possible number of substances in an unknown sample. A confirmation test is used to identify the presence of a specific substance in an unknown sample.
What is the most widely used illicit drug in the United States? Under what class of drugs is it listed and what are its short-term physical and psychological effects at low to moderate doses?
Marijuana, which is a hallucinogen. The side effects can include hunger, hilarity, relaxation, restlessness, and altered sensory perception.
Describe how a microcrystalline test works. Name two advantages of microcrystalline tests.
Chemical reagent is added to a small quantity of drug on a slide. After a short time, it will produce crystals that show the characteristics.
1.) The tests are quick.
2.) They don't require isolation from dilutents in drug.
A white powder received by the forensic chemist must be identified. What are the preferred analytical methods for identification of the powder's organic components?
Chromatography as screening, color or UV spectrophotometry; IR spectrophotometry or GC/MS analysis as a confirmation test.