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Who wrote the first treatise describing the application of science to the field of criminal investigation?
guilt of the suspect(s)
What is the LEAST important consideration in the gathering of evidence at a crime scene?
As the post mortem interval increases, the concentration of potassium in the vitreous humor of the eye:
AIDS and hepatitis B (both A and B)
The presence of blood and semen at crime scenes exposes investigators to:
in the process of a legal arrest
The police are not required to obtain a search warrant if they are:
depict injuries and weapons at scene
If the crime scene includes a dead body, the photographer should:
A corpse was discovered in an apartment last November. It was that of a 50-year-old male who died of a heart attack. At the time of discovery, the body temperature was determined to be 89 degrees fahrenheit. What is the most probably post mortem interval?
none of the above (not chemistry, geology, nor biology)
Which area of science is NOT involved in criminalistics?
Note taking is done after all crime scene processing has been completed.
Which statement about note taking is NOT true?
secure the scene
The first officer arriving at a crime scene, after providing or obtaining medical assistance for the injured and effecting an arrest of suspects (if possible), should immediately:
Evidence of tampering with the position of a body after death can be obtained by evaluating the:
the standard reference sample (control) does not share characteristics with evidence at the crime scene
Physical evidence can be used to exonerate or exclude a person from suspicion if:
The _________ of a substance varies with the color of the light passing through it, its temperature, and the wavelength of the light passing through it.
The change in refractive index upon annealing tempered glass is _________ the change in refractive index upon annealing untempered glass.
The birefringence of a sodium chloride (a cubic crystal) is ____ the birefringence of a calcite (a non-cubic crystal).
The use of the Celsius temperature scaleby scientists is ____ their use of the Fahrenheit temperature scale.
The heat intensity (hotness) of water at 10 degrees Celsius is _____ the heat intensity of water at 21 degrees Fahrenheit.
comparison of dried soil samples for color and texture
What is the logical first step in soil analysis?
is wider on the exit side
When a bullet penetrates a panel of glass, it leaves a crater-shaped hole that:
True or False: Radial cracks appear first, starting on the side opposite the destructive force. (during the fracturing of glass)
Paint and hair, soil and fibers, and glass and metal objects would be expected to have _______.
electron energy levels
An element is selective in the frequency of light it will absorb. This selectivity is due to its:
fine or coarse adjustment
When using a compound microscope, the areas about and below the depth of focus are best viewed by adjusting the:
transmitted and vertical illumination
A comparison microscope designed to examine bullets and cartridges is equipped with:
The presence of sheath cells on hair that has been pulled quickly from the head is ____ the presence of sheath cells on hairs that have been removed slowly from the scalp.
A compound microscope is equipped with two objectives lenses (10x and 45x) and has a 10x ocular lens. The highest magnification attainable with this instrument is:
Which microscope is most likely to be used as a tool for determining whether a suspect has recently fired a gun?
In which order should chemical treatments to visualize latent prints be performed? 1. ninhydrin 2. iodine fuming 3. physical developer
In the Primary Classification System, a finger is assigned numerical value if its pattern is a:
all of the previous (extractor and ejector mechanism and firing pin)
Distinctive markings of shells and cartridges can be made by:
photographing and casting with dental stone
Shoe and tire marks impressed into soft earth can be best preserved by:
model, make, and year
After examining small paint chips from an auto accident scene and using the PDQ database, the crime lab worker can determine the ___ of the vehicle.
take a 1:1 photograph of the print
After successfully visualizing a latent print on an object an investigator should next:
transported to the crime lab in a container with enough of the same water necessary to keep it submerged
When a gun is recovered from an underwater location, it should be:
bullet will be made to spin and hence have a true and accurate course on leaving the barrel
The reason grooves are rifled into the bore of a gun is so that a:
Most _______ are obtained from opium, physically addicting, and are depressants to the central nervous system.
Which hallucinogen can be synthesized by a simple chemical process and is often manufactured in clandestine laboratories?
The sniffing of volatile _____ can cause drowsiness and stupor, slurred speech and double vision, and feelings of exhilaration and euphoria.
Controlled Substance Act
The ___________ established five schedules of classification for substances based on the drug's potential for physical and psychological dependence, medical value, and potential for abuse.
The amount consumed, the presence or absence of food in the stomach, and the alcoholic content of the beverage are all factors in determining the rate at which alcohol is absorbed into the ________.
There is a(n) ______ relationship between the amount of alcohol in the blood and that in the alveolar breath.
a precipitin test
To determine whether a bloodstain is of human or animal origin, the serologist will perform:
____________ are produced by injecting a mouse with an antigen, are produced utilizing rapidly multiplying blood-cancer cells, and are expected to be medicine's version of the "magic bullet."
The rate of alcohol absorption on a full stomach is ___ the rate of absorption on an empty stomach.
lift the print with adhesive tape
After successfully visualizing a latent print on an object and photographing it, an investigator should next:
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