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Forensic Science Chapter 7 - Toxicology Flashcards | StudBud
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Forensic Science Chapter 7 - Toxicology
Forensic Science Chapter 7 - Toxicology
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Answers
1
The DRE program incorporates standardized methods for examining suspects to determine:
whether they are under the influence of one or more drugs.
all of these.
whether they have ever taken one or more drugs.
whether they are transporting any illegal substances.
2
Of the following, which is an acid drug?
methamphetamine
cocaine
PCP
aspirin
3
To analyze blood for alcohol, forensic labs normally use:
GC
GM/MS
LC
TLC
4
Alcohol is oxidized in the body primarily in:
the kidneys.
the lungs.
the small intestine.
the liver.
5
In the case of Schmerber v. California, blood was categorized as being:
direct evidence
testimonial evidence
indirect evidence
nontestimonial evidence
6
There is a(n) _ relationship between the amount of alcohol in the blood and the alveolar breath
undetermined
variable
direct
indirect
7
Amount of alcohol absorbed through the stomach is _ the amount absorbed through small intestine
less than
I don't know
greater than
the same as
8
A breath test may be used to analyze:
marijuana
amphetamines.
barbiturates.
ethyl alcohol
9
The blood alcohol concen. level for being legally “Under the Influence” in most states is:
0.10 percent
0.04 percent
0.08 percent
0.05 percent
10
Which test is NOT a widely used SCREENING tool in the toxicology lab?
MS
TLC
immunoassay
GC
11
Rate of alcohol absorption on a full stomach is ___ the rate of absorption on an empty stomach.
alcohol is not absorbed with either
less than
the same as
greater than
12
For the purpose of extracting the drug out of body tissues, an amphetamine is classified as an:
Basic drug
Acid drug
None of these
Neutral drug
13
The technique widely used for directly measuring the amount of alcohol present in the blood is:
IR Spectrophotometry
TLC
GC
atomic absorption
14
Field sobriety tests do NOT include:
performance of sit ups
walk and turn
one leg stand
horizontal gaze nystagmus
15
Which can be used to determine the body's alcohol content if blood is not available?
urine
all of these
vitreous humor
cerebrospinal fluid
16
The Reinsch test would NOT be used to detect:
bismuth
arsenic
mercury
copper
17
DOT set the maximum allowable blood alcohol concen. for commercial truck and bus drivers at:
.08%
.04%
.02%
.05%
18
Which is a factor in determining the rate at which alcohol is absorbed into the bloodstream?
Amount of alcohol consumed
Alcohol content in the beverage
All of these
Presence or absence of of food in the stomach
19
Some alcohol breath-testing devices use __ light to measure the quantity of alcohol.
visible
ultraviolet
infrared
laser
20
In Western countries, the most heavily abused drug(s) is/are:
barbiturates
cocaine
alcohol
amphetamines
21
All positive drug findings must be confirmed by a specific test. The test of choice is:
UV spectrophotometry
GC/MS
TLC
GC
22
A neutral substance will have a pH closest to:
7
2
0
9
23
The elimination or “burn off” rate of alcohol averages ___________ percent w/v per hour.
0.15
0.10
0.015
none of these
24
High levels of carbon monoxide in the blood of a victim at the scene of a fire is proof that:
the victim was the arsonist.
the victim died before the fire started.
the victim was not a cigarette smoker.
the victim perished after the fire started.
25
Alcohol is eliminated from the body chemically unchanged in:
breath.
perspiration.
all of these.
urine.
26
If a specimen of blood is kept unrefrigerated, the alcohol concentration can be expected to:
outcome is unpredictable.
remain unchanged.
increase with time.
decrease with time.
27
A substance with a pH of 8 is likely to be:
basic
neutral
water
acidic
28
The concen. of alcohol in breath is in direct proportion to that of blood. This ratio is:
1:100
1:2,100
1:1
1:21,000
29
Carbon monoxide is toxic because it:
combines with hemoglobin to form carboxyhemoglobin.
destroys red blood cells.
causes brain damage due to overexposure to carbon atoms.
activates killer white blood cells.
30
Upon entering the bloodstream, heroin is almost immediately metabolized into:
opium
cocaine
morphine
codeine
31
The toxicologist's capabilities are NOT directly dependent on the input from the:
case prosecutor
attending physician
medical examiner
police investigator
32
During the period of absorption, the concen. of alcohol in arterial blood is _ in venous blood.
the same as
greater than
I don't know
less than
33
The following drug is not typically found in blood or urine:
heroin
methadone
amphetamine
morphine
34
A breath test reflects the alcohol concentration in the:
aorta
superior vena cava
pulmonary artery
left ventricle
35
Which of the following uses the lowest blood alcohol concen. to determine legal impairment?
Canada
Japan
Sweden
US