Criminalistics Final

Criminal Justice 280 with Wilson at Missouri Western State University

About this deck

By: Dillon Williams
Created: 2011-12-13
Size: 83 flashcards
Views: 85

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If glass cannot be physically pieced together then the con…. question glass are best compared as to their (#13)

c) Refractive Index and density

The fracture pattern of glass usually has: (#14)

c) Radial and concentric lines

Stress marks on the edge of a radial crack near the … are (#15)

b) Parallel to the side on which the force was applied

A technique frequently used to compare soils is (#16)

b) Density-gradient tubes

The physical state that has both shape and volume is: (#17)

a) solid

Organic chemistry is the study of substances containing: (#18)

d) Carbon

A technique for separating and tentatively identifying components of a mixture is: (#19)

c) Chromatography

Which of the following is not part of the absorption spectrophotometer? (#20)

d) Carrier gas

A compound can tentatively be identified by gas chromatography by its: (#21)

d) Retention time

A single specific test for identification is: (#22)

a) Infrared spectrophotometry

The function of a monochromator is to: (#23)

a) Disperse light into its different wavelengths

b) Pass the radiation through a slit

c) Select radiation of known frequency or wavelengths

d) All of the above

e) None of the above

The distribution of a substance between a mobile and stationary phase describes: (#24)

d) Chromatography

The recorder of a spectrophotometer measures: (#25)

c) Absorption of light at specific frequencies

Which of the following has higher frequencies and higher energy values in the electromagnetic spectrum? (#26)

e) X-rays

A “fingerprint” of an element is obtained by the technique of: (#27)

d) Emmision spectroscopy

Which of the following statements is false? (#28)

d) The electron and proton have the same mass

The atoms of hydrogen, deuterium, and tritium all have the same number of protons, but differ in the number of neutrons that they possess. These substances are: (#29)

e) Isotopes

In neutron activation analysis, an element is identified by measuring the energy of emitting: (#30)

d) Gamma waves

The emission spectrograph is used to determine: (#32)

d) The elemental composition of a substance

The magnification power of a microscope equals the magnifying power of: (#33)

e) The objective lens multiplied by the eyepiece lens

The most important tool of the firearms examiner is the: (#34)

c) Stereoscopic microscope

The portion of the hair containing its scales is: (#35)

b) The cuticle

A human head hair is best characterized by: (#36)

d) A medulla that is absent or is less than 1/3 the diameter of the shaft

Hair can best be characterized as originating from an animal by examining: (#37)

c) Both the medulla and the cuticle

Which statement is true? (#38)

e) Two hairs from the same head may not have the same morphological characteristics

Rayon is classified as a: (#39)

d) Regenerated fiber

Paint chips may be individualized to a single source by identifying their: (#41)

c) Color and layer structure

The polymeric make up of paint binders can read… (#42)

e) Pyrolysis gas chromatography

Marijuana is considered to be a: (#43)

d) Hallucinogen

The most satisfactory way of simultaneously separating and tentatively identifying drugs is by: (#44)

e) Chromatography

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? (#45)

b) II

There is a significant likelihood that continued use of ____ will result in a low degree of psychological dependence: (#46)

c) Marijuana

Regular use of the following drug may lead to physical dependence: (#47)

e) Ethyl alcohol

Which of the following is not a stimulant? (#48)

d) Ethyl alcohol

Which of the following is not a depressant? (#50)

a) Librium

b) Valium

c) Methaqualone

d) Ethyl alcohol

e) All of the above are depressants

Which of the following is considered to be a hallucinogen? (#51)

a) Phencyclidine (PCP)

b) Mescaline

c) Psilocybin

d) STP

e) All of the above are hallucinogens

Alcohol is eliminated from the body chemically unchanged in: (#52)

a) Urine

b) Breath

c) Perspiration

d) All of the above

e) None of the above

Alcohol is oxidized in the body primarily in: (#53)

c) The liver

The blood alcohol concentration level for being presumed to be legally “Under the influence” in most states is: (#54)

b) 0.08 or greater

A breath test may be used to analyze: (#55)

a) Ethyl alcohol

Blood is drawn from a living suspect involved in an automobile accident. If the specimen is kept unrefrigerated and at a moderately warm temperature the alcohol can be expected to: (#56)

c) Decrease with time

The elimination or “burn off” rate of alcohol averages _____% w/v per hour. (#57)

c) 0.015

The ratio of alcohol in the blood to alcohol in alveoli air is approximately: (#58)

d) 2100 to one

The analytical technique widely used for directly measuring the amount of alcohol present in the blood is: (#59)

a) Gas chromatography

The following drug is not found in blood or urine: (#60)

b) Heroin

In the court case ______ v. California, blood was categorized as being: (#62)

e) Non-testimonial evidence (The name in the court case was cut off when I took the picture but if I remember correctly, I’m pretty sure “e” is the answer)

The breathalyzer measures the quantity of light absorbed by: (#63)

d) Potassium dichromate

Some breath-testing devices for alcohol use ____ light to measure the quantity of alcohol trapped in a chamber: (#64)

c) Infrared

In forensic toxicology, all positive drug findings must be confirmed by a specific chemical test. The confirmation test of choice is: (#65)

d) Gas chromatography / mass spectrometry

The chemical reaction associated with a fire is: (#66)

b) Oxidation

The minimum temperature at which fuel vapor will ignite is: (#67)

d) The ignition temperature

Gasoline residues are best characterized by: (#68)

c) Gas chromatography

Which of the following is not possible to determine from a laboratory examination of evidence recovered from an arson? (#69)

c) Examination of the debris may reveal the brand name of gasoline used to start the fire

An initiating explosive often used in detonators is: (#70)

a) Lead azide

The chemical ingredients of black powder are commonly: (#71)

d) Potassium nitrate, carbon, sulfur

What approximate percentage of the population is type B. (#73)

d) 15%

An individual who is type O has (#74)

d) Both A and B antibodies

Antibodies are found: (#75)

d) In the blood serum

If blood is found to have both A and B antigens it is typed as: (#76)

c) AB

What approximate percentage of the population is secretors? (#77)

a) 80%

Which of the following can be typed by the A-B-O system? (#78)

b) Semen

Acid-phosphatase is a major constituent of: (#79)

b) Semen

Examples of polymers that contain repeating units known as nucleotides are: (#80)

d) DNA

Assume that two strands of DNA have been separated and the sequence of one strand is ATGC. State the sequence of bases on the second strand. (#82)

d) TACG

Portions of the DNA molecule useful for DNA typing. (#84)

c) Are repeated many times

Which of the following types of fingerprints are more likely to be found impressed in soft wax? (#87)

b) Plastic

The first systematic system of individual classification and identification was introduced by: (#88)

d) Alphonse Bertillion

The fingerprint pattern accounting for only five percent of all known patterns is the: (#89)

a) Arch

A fingerprint pattern having no delta is: (#90)

a) Arch

Protein residues are best developed into fingerprint impressions with: (#91)

b) Ninhydrin

Chemical methods for developing latent fingerprints must be used in the following sequence: (#92)

a) Iodine, silver nitrate, ninhydrin

Which of the following is not expected to show an evidential marks or impressions? (#93)

d) A shotgun pellet

Which of the following procedures is not to be followed in collecting and packaging firearms evidence at the crime scene? (#94)

b) Avoid inserting a stick or pencil into the barrel of a weapon

Two elements detected on the hands of an individual who has fired a weapon are: (#95)

b) Barium and antimony

Which of the following statements is true? #96

a) A bullet can be individualized to a weapon by the number and twist of its lands and grooves

b) The comparison microscope is an indespensible tool of the firearm examiner

c) The diameter of the bore of a rifled firearm is its guage

d) Carbonaceous smoke or soot deposited around a bullet hole normally is indicative of a discharge 12 to 18 feet or less from a target

e) All of the above statements are true

A technique applicable for determining whether an individual recently fired a weapon is:(#97)

a) Neutron activation analysis

b) Atomic absorption analysis

c) The scanning electron microscope

d) All of the above

e) None of the above

Document examiners frequently uncover the original writing of words that have been crossed out with the aid of: (#98)

c) Infrared radiation

A voice print portrays: (#99)

a) The frequency of speech

b) The time of speech

c) The intensity of speech

d) All of the above

e) Choices A and B

About this deck

By: Dillon Williams
Created: 2011-12-13
Size: 83 flashcards
Views: 85

About StudyBlue

“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy