Forensic Science

There is a(n) _____ relationship between the amount of alcohol in the blood and

There is a(n) _____ relationship between the amount of alcohol in the blood and

There is a(n) _____ relationship between the amount of alcohol in the blood and that in the alveolar breath.
   a. Variable 
   b. Indirect
   c. Direct 
   d. Undetermined 

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swift383

A breath test reflects the alcohol concentration in the:

A breath test reflects the alcohol concentration in the:

A breath test reflects the alcohol concentration in the: 
   a. Aorta. 
   b. Left ventricle.
   c. Pulmonary vein.
   d. Pulmonary artery.

arealhero   608   3 Replies

swift383

Field sobriety tests do NOT include:

Field sobriety tests do NOT include:

Field sobriety tests do NOT include: 
   a. Walk and turn.
   b. Horizontal gaze nystagmus.
   c. Performance of sit ups.
d. One leg stand.

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swift383

To analyze blood for alcohol, forensic labs normally use:

To analyze blood for alcohol, forensic labs normally use:

To analyze blood for alcohol, forensic labs normally use: 
   a. TLC.
   b. GM/MS. 
   c. LC.
   d. GC.

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swift383

The DOT set the maximum allowable blood alcohol concentration for commercial tru

The DOT set the maximum allowable blood alcohol concentration for commercial tru

The DOT set the maximum allowable blood alcohol concentration for commercial truck and bus drivers at: 
   a. 0.08%. 
   b. 0.02%.
   c. 0.05%. 
   d. 0.04%.

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swift383

After a blood sample is collected for alcohol testing, a(n) _____ is added to st

After a blood sample is collected for alcohol testing, a(n) _____ is added to st

After a blood sample is collected for alcohol testing, a(n) _____ is added to stop the blood from clotting.
   a. Monochromator
   b. Anti-coagulant
   c. Preservative
   d. Fuel cell

arealhero   1841   3 Replies

swift383

Upon entering the bloodstream, heroin is almost immediately metabolized into:

Upon entering the bloodstream, heroin is almost immediately metabolized into:

Upon entering the bloodstream, heroin is almost immediately metabolized into: 
   a. Morphine.
   b. Procaine.
   c. Opium.
   d. Cocaine.

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swift383

The toxicologist's capabilities are NOT directly dependent on the input from the

The toxicologist's capabilities are NOT directly dependent on the input from the

The toxicologist's capabilities are NOT directly dependent on the input from the: 
   a. Medical examiner. 
   b. Police.
   c. Case prosecutor. 
   d. Attending physician.

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swift383

Which is NOT a widely used screening tool in the toxicology lab?

Which is NOT a widely used screening tool in the toxicology lab?

Which is NOT a widely used screening tool in the toxicology lab? 
   a. Immunoassay 
   b. TLC
   c. GC-MS 
   d. None of the above

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swift383

Analyzing segments of hair for drug content may define the timeline for drug use

Analyzing segments of hair for drug content may define the timeline for drug use

Analyzing segments of hair for drug content may define the timeline for drug use, dating it back over a period of:
   a. Days.
   b. Weeks.
   c. Years.
   d. All of the above

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swift383

The Reinsch test would NOT be used to detect:

The Reinsch test would NOT be used to detect:

The Reinsch test would NOT be used to detect: 
   a. Bismuth.
   b. Copper.
   c. Mercury.
   d. Arsenic.

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swift383

Carbon monoxide is toxic because it:

Carbon monoxide is toxic because it:

Carbon monoxide is toxic because it: 
   a. Activates killer white blood cells.
   b. Destroys red blood cells.
   c. Causes platelets to clump.
   d. Combines with hemoglobin to form carboxyhemoglobin.

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swift383

The presence of high levels of carbon monoxide in the blood of a victim found at

The presence of high levels of carbon monoxide in the blood of a victim found at

The presence of high levels of carbon monoxide in the blood of a victim found at the scene of a suspicious fire is proof that the victim: 
   a. Died elsewhere and was brought to the fire scene after death. 
   b. Perished after the

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swift383

The rate of alcohol absorption on a full stomach is _____ the rate of absorption

The rate of alcohol absorption on a full stomach is _____ the rate of absorption

The rate of alcohol absorption on a full stomach is _____ the rate of absorption on an empty stomach. 
   a. The same as
   b. Less than
   c. Greater than
   d. None of the above 

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swift383

The concentration of alcohol in an exhaled breath is in direct proportion to tha

The concentration of alcohol in an exhaled breath is in direct proportion to tha

The concentration of alcohol in an exhaled breath is in direct proportion to that of the blood of the same individual.  The ratio of this relationship is closest to: 
   a. 1:10.
b. 1:1,000. 
   c. 1:100.
   d. 1:2,000

arealhero   1525   3 Replies

swift383

Alcohol is eliminated from the body chemically unchanged in:

Alcohol is eliminated from the body chemically unchanged in:

Alcohol is eliminated from the body chemically unchanged in:
a. Urine
   b. Breath
   c. Perspiration
   d. All of the above

arealhero   1633   3 Replies

swift383

Alcohol is oxidized in the body primarily in:

Alcohol is oxidized in the body primarily in:

Alcohol is oxidized in the body primarily in:
   a. The stomach.
   b. The small intestine.
   c. The liver.
   d. The lungs.

arealhero   1647   3 Replies

swift383

A breath test may be used to analyze:

A breath test may be used to analyze:

A breath test may be used to analyze:
   a. Ethyl alcohol.
   b. Marijuana.
   c. Barbiturates.
d. All of the above

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swift383

The elimination or “burn off” rate of alcohol averages _____ percent w/v per hou

The elimination or “burn off” rate of alcohol averages _____ percent w/v per hou

The elimination or “burn off” rate of alcohol averages _____ percent w/v per hour.
   a. 0.10
   b. 0.15
   c. 0.015
   d. None of the above

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swift383

In the case of Schmerber v. California, blood was categorized as ¬being:

In the case of Schmerber v. California, blood was categorized as ¬being:

In the case of Schmerber v. California, blood was categorized as ¬being:
   a. Direct evidence.
   b. Indirect evidence.
   c. Testimonial evidence.
   d. Nontestimonial evidence.

arealhero   1926   3 Replies

swift383

A neutral substance will have a pH closest to:

A neutral substance will have a pH closest to:

A neutral substance will have a pH closest to:
   a. 0
   b. 2
   c. 5
   d. 7

arealhero   1613   4 Replies

swift383

Field sobriety tests that can be employed to ascertain the degree of an individu

Field sobriety tests that can be employed to ascertain the degree of an individu

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. Horizontal gaze nystagmus.
   c. Gas chromatography.

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swift383

For the purpose of extracting the drug out of body tissues, an amphetamine is cl

For the purpose of extracting the drug out of body tissues, an amphetamine is cl

For the purpose of extracting the drug out of body tissues, an amphetamine is classified as an:
   a. Acid drug.
   b. Basic drug.
   c. Neutral drug.
   d. All of the above.

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swift383

About 95–98 percent of alcohol is oxidized to what two substances?

About 95–98 percent of alcohol is oxidized to what two substances?

About 95–98 percent of alcohol is oxidized to what two substances?
a. Carbon dioxide and dehydrogenase
b. Water and acetic acid
c. Acetaldehyde and acetic acid
d. Water and carbon dioxide

arealhero   2099   3 Replies

swift383

A drug recognition expert (DRE) can:

A drug recognition expert (DRE) can:

A drug recognition expert (DRE) can: 
a. Identify street drugs by their appearance.
b. Help a drug user acknowledge his/her habit and suggest ways to become drug-free. 
c. Determine whether a person has taken one or more dr

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swift383

The analytical technique widely used for directly measuring the amount of alcoho

The analytical technique widely used for directly measuring the amount of alcoho

The analytical technique widely used for directly measuring the amount of alcohol present in the blood is:
   a. Gas chromatography.
   b. Thin-layer chromatography.
   c. Infrared spectrophotometry.
   d. Ultra-violet spectrophotometry.

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swift383

Some breath-testing devices for alcohol use _____ light to measure the quantity

Some breath-testing devices for alcohol use _____ light to measure the quantity

Some breath-testing devices for alcohol use _____ light to measure the quantity of alcohol trapped in a chamber.
   a. Visible
   b. Ultraviolet
   c. Infrared
   d. Colored

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swift383

What type of evidence would be expected to have trace elements?

What type of evidence would be expected to have trace elements?

What type of evidence would be expected to have trace elements? 
a. Glass and metal objects
b. Paint and bullet fragments
c. Soil and gun primer particles
d. All of the above 

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swift383

In a simple emission spectrograph, excitation of the specimen under investigatio

In a simple emission spectrograph, excitation of the specimen under investigatio

In a simple emission spectrograph, excitation of the specimen under investigation is accomplished with a(n): 
a. Electrical arc.
b. Inductive magnetic field.
c. Hot plasma torch.
d. Activated prism.

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swift383

An element is selective in the frequency of light it will absorb. This selectivi

An element is selective in the frequency of light it will absorb. This selectivi

An element is selective in the frequency of light it will absorb. This selectivity is due to its: 
a. Number of neutrons.
b. Proton cloud.
c. Atomic mass. 
d. Electron energy levels.

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swift383

Atoms having the same atomic number but different atomic masses are called: a.

Atoms having the same atomic number but different atomic masses are called: a.

Atoms having the same atomic number but different atomic masses are called: 
a. Isobars.
b. Isotopes. 
c. Isotherms. 
d. Isomers.

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swift383

Which type of radiation is NOT given off by radioactive decay?

Which type of radiation is NOT given off by radioactive decay?

Which type of radiation is NOT given off by radioactive decay? 
a. X rays 
b. Gamma rays
c. Beta particles
d. Alpha particles

arealhero   652   3 Replies

swift383

Neutron activation analysis involves bombarding specimens with neutrons and then

Neutron activation analysis involves bombarding specimens with neutrons and then

Neutron activation analysis involves bombarding specimens with neutrons and then measuring the resultant: 
a. X rays. 
b. Gamma rays.
c. Beta particles.
d. Alpha particles. 

arealhero   400   3 Replies

swift383

Which of the following is a non-destructive technique for identifying and quanti

Which of the following is a non-destructive technique for identifying and quanti

Which of the following is a non-destructive technique for identifying and quantifying trace elements in a test sample? 
a. Carbon arc emission spectrometry 
b. ICP emission spectrometry
c. Neutron activation analysis 

arealhero   448   3 Replies

swift383

The most abundant element of the earth’s crust is:

The most abundant element of the earth’s crust is:

The most abundant element of the earth’s crust is:
   a. Oxygen.
   b. Hydrogen.
   c. Carbon.
   d. Aluminum.

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swift383

A “fingerprint” of an element is obtained by the technique of:

A “fingerprint” of an element is obtained by the technique of:

A “fingerprint” of an element is obtained by the technique of:
   a. Infrared spectrophotometry.
   b. Ultraviolet spectrophotometry.
   c. Gas chromatography.
   d. Emission spectroscopy.

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swift383

The atoms of hydrogen, deuterium, and tritium all have the same number of proton

The atoms of hydrogen, deuterium, and tritium all have the same number of proton

The atoms of hydrogen, deuterium, and tritium all have the same number of protons, but differ in the number of neutrons they possess. These substances are:
   a. Elements.
   b. Compounds.
   c. Molecules.
   d. Isotopes.

arealhero   328   3 Replies

swift383

In neutron activation analysis, an element is identified by measuring the energy

In neutron activation analysis, an element is identified by measuring the energy

In neutron activation analysis, an element is identified by measuring the energy of emitting:
   a. Protons.
   b. Electrons.
   c. Neutrons.
   d. Gamma rays.

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swift383

Gamma rays are: (Multiple Choice)

Gamma rays are: (Multiple Choice)

Gamma rays are:
   a. Electrons.
   b. Protons.
   c. Neutrons.
   d. Electromagnetic radiation.

arealhero   275   3 Replies

swift383

Radioactivity is composed of: (Multiple Choice)

Radioactivity is composed of: (Multiple Choice)

Radioactivity is composed of:
   a. Alpha particles.
   b. Beta particles.
   c. Gamma rays.
   d. All of the above.

arealhero   378   3 Replies

swift383