Final Study Guide

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  • 1. 
    All unauthorized personnel must be _____________ from the crime scene.

  • 2. 
    The rate of  cooling of a dead body can  be influenced by all BUT the
    • A. 

      Weather conditions

    • B. 

      Location

    • C. 

      Size of body

    • D. 

      Gender of victim

    • E. 

      Exposure to direct sunlight


  • 3. 
    Who developed a system called anthropology?
    • A. 

      Bertillon

    • B. 

      Goddard

    • C. 

      Gross

    • D. 

      Galton

    • E. 

      Boaz


  • 4. 
    Which entity maintains the largest crime laboratory in the world?
    • A. 

      FBI

    • B. 

      RCMP

    • C. 

      Scotland Yard

    • D. 

      ATF

    • E. 

      LAPD


  • 5. 
    A rough sketch need NOT include a:
    • A. 

      Sketch of a suspect

    • B. 

      Date, location, and time

    • C. 

      Location of all recovered physical evidence

    • D. 

      Location of walls, doors, and windows in the building on scene


  • 6. 
    What s the least important consideration in the gathering of evidence at a crime scene?
    • A. 

      Adequate preservation of samples

    • B. 

      Competent collection of materials

    • C. 

      Proper recognition of the evidence

    • D. 

      Guilt of the suspect

    • E. 

      Completion of the chain of custody documents


  • 7. 
    Which area of science is NOT in criminalistics?
    • A. 

      Geology

    • B. 

      Biology

    • C. 

      Chemistry

    • D. 

      Metallurgy

    • E. 

      None of the above


  • 8. 
    The most basic methods of crime scene recording DO NOT include:
    • A. 

      Note taking

    • B. 

      Photographs

    • C. 

      Narrated tape/videotape

    • D. 

      Sketches

    • E. 

      Infrared analysis


  • 9. 
    Charred debris from arson scence should be:
    • A. 

      Placed together with similar items in a paper bag

    • B. 

      Placed in a ziploc bag

    • C. 

      Packaged in air tight jar

    • D. 

      Aired out before packing in a plastic wrap

    • E. 

      Thrown away with other fire debris


  • 10. 
    The collection of standard reference samples at the crime scene is important because they:
    • A. 

      Permit comparisons to be made with the evidence

    • B. 

      Are obtained only from suspects in case of violent crimes

    • C. 

      Prove the continuity of possession

    • D. 

      Serve as a source of extra test material if required in the crime lab

    • E. 

      Prevent the laboratory from making mistakes


  • 11. 
    The likelihood of finding class physical evidence is _________ the likelihood of finding physical evidence with individual characteristics.
    • A. 

      Same as

    • B. 

      Less than

    • C. 

      Greater than


  • 12. 
    Physical evidence can be used to exonerate or exclude a person from suspicion if:
    • A. 

      It is collected in accordance with the Forth Amendment

    • B. 

      The standard reference sample (control) does not share characteristics with evidence at the crime scene

    • C. 

      It does not have a well-documented chain of custody

    • D. 

      Evidence taken from a suspect voluntarily

    • E. 

      He (she) has not already confessed to the crime


  • 13. 
    As the magnification of microscope is increased the field of view
    • A. 

      Decreases

    • B. 

      Remains the same

    • C. 

      Increases


  • 14. 
    The heat intensity (hotness) of water at 100C is __________ the heat intensity of water at 212F.
    • A. 

      Greater than

    • B. 

      The same as

    • C. 

      Less than


  • 15. 
    If an object is immersed in a liquid of a greater density, it will:
    • A. 

      Be suspended in a liquid

    • B. 

      Float

    • C. 

      Sink


  • 16. 
    Tempered glass is used in:
    • A. 

      Windshields in cars manufactured in the US

    • B. 

      Crystal stemware

    • C. 

      The side and rear windows of cars manufactured in the US

    • D. 

      Both B and C

    • E. 

      None of the above


  • 17. 
    The process of glass prism separating sunlight into component colors is called
    • A. 

      Refraction

    • B. 

      Birefringence

    • C. 

      Sublimation

    • D. 

      Dispersion

    • E. 

      Reflection


  • 18. 
    When a bullet penetrates a panel of glass, it leaves a crater-shaped hole that:
    • A. 

      Is wider on the exit side

    • B. 

      Is wider on the entrance side

    • C. 

      Forms randomly and hence the direction of impact cannot be determined by its appearance

    • D. 

      A and C

    • E. 

      B and C


  • 19. 
    8 inches is approximately ________ centimeters.
    • A. 

      17

    • B. 

      10

    • C. 

      8

    • D. 

      20

    • E. 

      4


  • 20. 
    Which microscope has the largest potential working distance?
    • A. 

      Stereoscopic

    • B. 

      Comparison

    • C. 

      Polarizing

    • D. 

      Compound


  • 21. 
    Which is NOT part of the composition of paint?
    • A. 

      Solvent

    • B. 

      Adhesive

    • C. 

      Pigment

    • D. 

      Binder

    • E. 

      None of the above


  • 22. 
    Medulla may be classified as
    • A. 

      Interrupted or absent

    • B. 

      Fragmented

    • C. 

      Continuous

    • D. 

      All of the above

    • E. 

      None of the above


  • 23. 
    By far the most prevalent plant fiber is
    • A. 

      Linen

    • B. 

      Silk

    • C. 

      Kapok

    • D. 

      Cotton

    • E. 

      Hemp


  • 24. 
    A human hair in cross section appeared flat in shape.  the racial origin was most likely:
    • A. 

      Caucasian

    • B. 

      Negroid

    • C. 

      Indian

    • D. 

      Monogoloid


  • 25. 
    Pigment granules that impart hair with color are found in the
    • A. 

      Cortex

    • B. 

      Medulla

    • C. 

      Cuticle

    • D. 

      Both A and B

    • E. 

      None of the above


  • 26. 
    Which of the following is not a layer of the hair shaft?
    • A. 

      Cuticle

    • B. 

      Cortex

    • C. 

      Medulla

    • D. 

      Follicle


  • 27. 
    Under which circumstances have two people been found to have identical prints?
    • A. 

      Identical twins

    • B. 

      Members of the same immediate family

    • C. 

      Siamese twins

    • D. 

      Fraternal twins

    • E. 

      None to date


  • 28. 
    What is the minimum number of ridge characteristics
    • A. 

      10

    • B. 

      12

    • C. 

      16

    • D. 

      22

    • E. 

      No minimum exists in US justice system


  • 29. 
    Prints that are not readily visible are commonly referred to as
    • A. 

      Latent

    • B. 

      Open

    • C. 

      Plastic

    • D. 

      Rolled


  • 30. 
    Sublimation occurs with the use of
    • A. 

      Iodine fuming

    • B. 

      Cyanoacrylate

    • C. 

      Laser-print detection

    • D. 

      Silver nitrate

    • E. 

      Ninhydrin


  • 31. 
    Superglue fuming is NOT suitable for use on
    • A. 

      Cardboard

    • B. 

      Metal

    • C. 

      Leather

    • D. 

      Plastic bags

    • E. 

      Floor tile


  • 32. 
    The application of chemistry, physics, and geology to the identification and comparison of crime-scene evidence is the function of the ______________ unit of a crime laboratory.

  • 33. 
    The examination of bullets, cartridge cases, shotgun shells, and ammunition of all types is the responsibility of the ___________ unit.

  • 34. 
    Most physical evidence collected at the crime scene will require the accompanying submission of _____________ material for comparison.

  • 35. 
    A microscope uses a combination of _____ to magnify the image.

  • 36. 
    T/F: the distinction between individual and class evidence is always easy to make.

  • 37. 
    Evidence that can be traced to a common source with an extremely high degree of probability is said to possess _____________ characteristics.

  • 38. 
    When glass is immersed in a liquid of similar refractive index, its _____________ disappears and a minimum contrast between the glass and a liquid is observed.

  • 39. 
    The two most useful physical properties of glass for forensic comparison are ___________ and _____________.

  • 40. 
    T/F: it is easy to determine from the size and a shape of a hole in glass whether it was made by a bullet or some other projectile.

  • 41. 
    A _________ microscope consists of two lenses mounted at each other end of a hollow tube.

  • 42. 
    The _______ microscope focuses a beam of electrons on a specimen to produce an image.

  • 43. 
    T/F: the age and sex of an individual from whom a hair sample has been taken can eb determined through an examination of the hair's morphological features.

  • 44. 
    A(n) ________ hair root is a likely candidate for DNA typing.

  • 45. 
    _____________ composed of a large number of units arranged in repeating fashion.

  • 46. 
    A qualitative test will reveal the
    • A. 

      Usefulness of the compound

    • B. 

      Amount of the sample

    • C. 

      Identity of a material

    • D. 

      Purity of the substance

    • E. 

      Desity of a compound


  • 47. 
    T/F: pain samples removed for examination must always include all of their paint layers.

  • 48. 
    The three general patterns in which fingerprints are divided are ___________, ____________, and ______________.

  • 49. 
    Approximately 5% of population has the _________ fingerprint pattern.

  • 50. 
    All loops must have (one, two) deltas

  • 51. 
    Arches (have, don't have) deltas.

  • 52. 
    Which physical state has volume but no specific shape?
    • A. 

      Gas

    • B. 

      Liquid

    • C. 

      Solid

    • D. 

      No such state exists

    • E. 

      A and B


  • 53. 
    Which chromatographic process is used to analyze organic explosives and heat-sensitive drugs?
    • A. 

      TLC

    • B. 

      Paper chromatography

    • C. 

      GC

    • D. 

      HPLC

    • E. 

      Prolysis GC


  • 54. 
    Thin layer chromatography was performed and four spots were visualized on the glass side.  the substance with which Rf value was least soluable in the stationary phase?
    • A. 

      .7

    • B. 

      .2

    • C. 

      .5

    • D. 

      8.5

    • E. 

      10


  • 55. 
    Which of the following statements is FALSE?
    • A. 

      A gas chromatograph can be coupled to a mass spectrometer

    • B. 

      Gas chromatography cannot produce a specific identification of a chemical substance

    • C. 

      In mass spectrometry, a chemical substance enters a chamber where it is fragmented by high-energy electrons

    • D. 

      Many chemical substances have similar mass spectra fragmentation patterns

    • E. 

      A mass spectrometer can detect materials weighing only one millionth of a gram


  • 56. 
    Use of which of the following drugs is LEAST likely to lead to psychological dependence?
    • A. 

      Codeine

    • B. 

      Alcohol

    • C. 

      Heroin

    • D. 

      Cocaine

    • E. 

      Nicotine


  • 57. 
    Which drug is often incorrectly classified as a narcotic?
    • A. 

      Heroin

    • B. 

      Morphine

    • C. 

      Marijuana

    • D. 

      Codeine

    • E. 

      Opium


  • 58. 
    What is the most potent form of marijuana?
    • A. 

      Hashish

    • B. 

      Loose vegetation

    • C. 

      Sinsemilla

    • D. 

      Liquid hashish

    • E. 

      None of the above


  • 59. 
    Which is true of the use of mild tranquilizers?
    • A. 

      They impair high-thinking faculties

    • B. 

      They induce sleep

    • C. 

      They do not produce dependency

    • D. 

      They reduce tension

    • E. 

      They are never used in the treatment of mental health disorders


  • 60. 
    The most satisfactory way to simultaneously separating and tentatively identifying drugs is by:
    • A. 

      Ultraviolet spectrophotometry

    • B. 

      Infrared spectrophotometry

    • C. 

      Emission spectroscopy

    • D. 

      Neutron activation analysis

    • E. 

      Chromatography


  • 61. 
    Which is NOT a factor in determining the rate at which alcohol is absorbed into the bloodstream?
    • A. 

      The alcoholic content of the beverage

    • B. 

      The presence or absence of food in the stomach

    • C. 

      The amount consumed

    • D. 

      All of the above

    • E. 

      A and C only


  • 62. 
    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

    • E. 

      Punctuated


  • 63. 
    To analyze blood for alcohol, forensic labs normally use:
    • A. 

      TLC

    • B. 

      GM/MS

    • C. 

      PCR

    • D. 

      GC

    • E. 

      LC


  • 64. 
    A substance with a pH of 8 is likely to be
    • A. 

      Water

    • B. 

      Neutral

    • C. 

      Acidic

    • D. 

      Basic

    • E. 

      Corrosice


  • 65. 
    Carbon monoxide combines with what component of blood?
    • A. 

      Carboxyhemoglobin

    • B. 

      Hemoglobin

    • C. 

      Oxyhemoglobin

    • D. 

      White blood cells

    • E. 

      The plasma


  • 66. 
    Type AB blood contains
    • A. 

      Anti-A antibodies and B antigens

    • B. 

      Anti-A antigens and anti-B antibodies

    • C. 

      Both A and B antigens

    • D. 

      Both anti-A and anti-B antibodies

    • E. 

      None of the above: type AB blood has no antigens or antibodies


  • 67. 
    The amount of spatter from a blood droplet falling on a hard, non-porus surface is _____ that of a drop of blood of equal size, falling from the same distance, onto a softer, porous surface.
    • A. 

      The same as

    • B. 

      Less than

    • C. 

      Greater than


  • 68. 
    Paternity testing is done involving a woman with type AB blood who has accused a man with type B blood of fathering her child who was tested AB.  What can be determined in this case?
    • A. 

      The male is definitely NOT the father of the child

    • B. 

      The male could have fathered the child

    • C. 

      The male definitely IS the father of the child

    • D. 

      The child can not belong to this mother

    • E. 

      None of the above


  • 69. 
    To determine whether a bloodstain is of human or animal origin, the serologist will perform
    • A. 

      A preciptin test

    • B. 

      The luminol test

    • C. 

      An analysis with Hemastix strips

    • D. 

      RIA

    • E. 

      EMIT


  • 70. 
    Acid-phosphotase test is used in the analysis of
    • A. 

      Blood

    • B. 

      Semen

    • C. 

      Saliva

    • D. 

      Perspiration

    • E. 

      All of the above


  • 71. 
    The building blocks of the DAN molecule are known as:
    • A. 

      Amino acids

    • B. 

      Nucleotides

    • C. 

      Polysaccharides

    • D. 

      Hydrocarbons

    • E. 

      Purines


  • 72. 
    What is the number of nitrogenous bases needed to code for a specific amino acid?
    • A. 

      2

    • B. 

      3

    • C. 

      5

    • D. 

      6

    • E. 

      4


  • 73. 
    PCR is a technique that:
    • A. 

      Provides a statistical analysis of the nitrogenous-base pairings

    • B. 

      Can produce many exact copies of segments of DNA

    • C. 

      Produces information regarding the sequence of nitrogenous bases

    • D. 

      Virtually eliminates operator error from DNA analysis

    • E. 

      All of the above


  • 74. 
    In the PCR process, the first step is to heat the DNA strands.  this is to permit the
    • A. 

      DNA to coil very tightly in the helical shape

    • B. 

      Process to take place without DNA degradation

    • C. 

      Hybridization to take place

    • D. 

      Double-stranded molecules to separate completely

    • E. 

      DNA to be extracted from the nucleus of the cell


  • 75. 
    The separation of STRs using capillary electrophoresis
    • A. 

      Evolved from the flat-gel electrophoresis approach

    • B. 

      Decreases analysis time

    • C. 

      Is currently the preferred method

    • D. 

      Automates sampling and data collection

    • E. 

      All of the above


  • 76. 
    The amount of DNA material required for STR analysis is _______ the amount of DNA required for RFLP analysis
    • A. 

      The same as

    • B. 

      Greater than

    • C. 

      Less than


  • 77. 
    The discriminating power of mtDNA is _______ the discriminating power of STR analysis
    • A. 

      Greater than

    • B. 

      The same as

    • C. 

      Less than


  • 78. 
    The writing characteristics of a person may be altered by whether
    • A. 

      A significant amount of time has passed between writing of exemplar and the questioned document

    • B. 

      Paper is ruled or unruled

    • C. 

      Pencil, ballpoint or fountain pen is used

    • D. 

      The posture or stance if the author varies between writings

    • E. 

      All of the above


  • 79. 
    Document examiners frequently uncover the original writing of words that have been crossed out with the aid of
    • A. 

      Color photography

    • B. 

      Transmitted radiation

    • C. 

      Infrared radiation

    • D. 

      Side lighting

    • E. 

      TLC


  • 80. 
    ___________ is the sticky resin extracted from the marijuana plant.

  • 81. 
    Alcohol is eliminated from the body by ________ and _________.

  • 82. 
    Physical dependency develops only when the drug user adheres to the ___________ schedule of drug intake

  • 83. 
    T/F: methadone is classified as a narcotic drug, even though it is not derived from opium or morphine.

  • 84. 
    Alcohol (stimulates, depressed) the central nervous system.

  • 85. 
    Inks on handwritten documents may be compared for their chemical composition by the technique of
    • A. 

      TLC

    • B. 

      IR

    • C. 

      UV

    • D. 

      GC

    • E. 

      None of the above


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