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WorksheetsForensic Science Final Exam
Total questions: 55
Worksheet time: 1hrs 1mins
Which of the following is not a job of a forensic scientist ?
process and document crime scenes
collect and preserve evidence
determine the guilt or innocence of a party
provide expert testimony
This branch of forensic science studies, sex, age, race and height of body remains found at a crime scene
forensic toxicology
forensic psychiatry
forensic entomology
forensic anthropology
Weapons and guns are analyzed by this unit of forensic science
document examination unit
photography unit
biology unit
Firearms unit
Blood and urine and other bodily fluids are analyzed by this forensic science unit.
fingerprint unit
voice analysis unit
Toxicology unit
evidence collection unit
Correct collection of evidence requires which of the following?
documenting the location where the evidence was found
correct packaging of evidence
maintaining proper chain of custody
all of the above
A crime scene sketch should include all of the following EXCEPT
a scale of distance
date and location of the crime scene
a North heading on the diagram
the type of search pattern used to collect the evidence
Refers to physical evidence that is found in small but measurable amounts, such as strands of hair, fibers, or skin cells.
Direct evidence
Circumstantial evidence
Biological evidence
Trace evidence
First hand observations of what happened at a crime scene from a video recording, a confession or an eyewitness account is considered
Direct evidence
Circumstantial evidence
Biological evidence
Trace evidence
Whenever two objects come into contact with each other, there is always a transfer of material. This concept is known as
the Locard exchange principle
the law of probability
the law of circumstantial facts
the law of comparison
The reason it is important to separate the witnesses at a crime scene is to
to prevent contamination of the evidence
to prevent fighting among the witnesses
to prevent the witnesses from talking to each other
to protect them from the perpetrator
Eyewitness testimony bias can happen when a witness receives positive feedback from police personnel. In order to reduce the incidence of misidentification, the Innocence project recommends
presenting line-up members to the witness simultaneously.
circling the picture of the most likely suspect on a series of line-up photos.
non-suspect fillers should vary from each other and the suspect to include a wide variety of ethnicities.
administering a double blind line-up in which the administrator does not know the identify of the suspect and the witness is told this information.
The medullary index of a human hair is
0.33 or less
0.5 or more
.75 or more
0.25 or more
A hair fiber with an intact root that contains skin cells is considered to be _____________ evidence.
Class evidence
Physical evidence
Individual evidence
Direct evidence
Hair with a flattened oval cross section is likely to come from a person with
straight hair
wavy or curly hair
damaged hair
color treated hair
The technique used to look for hairs and fibers at a crime scene is to use
electrostatic lifting film.
oblique lighting.
ultra violet lighting.
using luminol spray in a dark room.
During a burn test, this fiber will smell like burning hair and will stop burning when it is moved away from the flame.
cotton
wool
silk
acrylic
What is the pattern of this fingerprint?
arch
loop
plain whorl
double whorl
Fingerprints are considered to be ______________ evidence
direct evidence
class evidence
individual evidence
trace evidence
What are the unique features that form when ridge lines of a fingerprint run into each other as the ridge line grows?
details
minutiae
trifles
particularities
What is the name for the system of skeletal body measurements that are taken to create a unique identity of a person?
Galton signalment
Orfila signalment
Bertillon signalment
Locard signalment
What technique is used to lift latent fingerprints from a smooth surface such as plastic or glass?
Dusting with fine carbon powder
Electrostatic lifting film
Luminol spray in dark lighting
Making a cast with mikrosil or silicone.
Three dimensional impressions left in a soft material such as much, snow or soil are known as
patent impressions
latent impressions
plastic impressions
first impressions
A particular tread pattern in a shoe or a tire may identify a ____________ or _______________, but it does not identify an individual item.
shape ; size
make ; model
brand ; size
shape ; model
Based on a study conducted by the National Academy of Science, bite mark evidence is unreliable as a type of individual evidence for all of the following reasons EXCEPT
There is no evidence to prove that tooth dentition patterns are unique for each person.
Bite marks made by the same person cannot consistently be reproduced on different people.
Bite mark evidence can only be analyzed when the skin is unbroken.
Bite marks on the skin can easily be confused with other types of marks from injuries that are left on the body.
A famous criminal case that was solved using tool mark evidence was
the Ted Bundy serial killings case.
the Lindbergh kidnapping case.
the Atlanta child murders case.
the Dr. Swango mysterious patient deaths case.
Flintlock, matchlock and muzzleloading rifles were replaced with breech loading firearms after the invention of the
cassette
magazine
cylinder
cartridge
_______________ refers to the diameter of the bullet.
Gauge
Strength
Caliber
Bore
The grooves cut into the barrel of a firearm is called
spin lines
landing patterns
rifling patterns
breech patterns
A forensic ballistics expert will compare a fired bullet with a test bullet using a comparison microscope and attempt to align the _______________ marks in order to determine if they were both shot from the same firearm.
striation
ribbon
streak
banding
Substances that are deemed safe and may even have medicinal value can be considered a toxin depending upon the
duration of exposure
dosage of exposure
frequency of exposure
mode of exposure
The Marsh test is able to detect _______________ poison.
Lead
Arsenic
Mercury
Cyanide
The man who is known as the 'father of toxicology' is
James Marsh
Alphonse Bertillon
Francis Galton
Mathieu Orfila
What poison was used to contaminate Tylenol capsules in 1982?
Arsenic
Cyanide
Aconite
Ricin
Some poisons are not easily detected in the body because they are quickly broken down into other substances. The breakdown product of a substance is called the
secondary toxin
molecular footprint
metabolite
derivative
If an unknown substance is collected as evidence, the first test that is done will help a forensic toxicologist to categorize the chemical into a particular class of compounds. This test is known as a
presumptive test
confirmation test
first class test
initial test
Which kinds of blood cells have antigens present that will be used to determine a person's blood type?
platelets
white blood cells
red blood cells
epithelial cells
If a person has type B- blood, what kind of blood can they safely receive in a transfusion?
Only B- blood
B+ and B- blood
B-, O- and O+
B- and O- blood
Based on the droplets of blood, which direction were the blood droplets travelling when they hit the white surface?
To the right
To the left
You cannot determine the direction of travel based on this image.
Some droplets were travelling to the right and some to the left.
The basic building blocks of DNA molecules are called
amino acids
fatty acids
nucleotides
bases
There are four types of nitrogen bases found in DNA molecules: G,A,T and C. The bases form complementary pairs. Which of the following shows the correct pairs.
A to G and C to T
A to C and G to T
A to A, C to C, G to G, and T to T
A to T and C to G
What technique is used to create a DNA fingerprint?
PCR
DNA replication
Gel Electrophoresis
Protein Synthesis
Which two people will have the same exact DNA fingerprint?
Mother and child
Father and child
Fraternal twin sisters
Identical twin brothers
Based on the DNA evidence, which suspect can be connected to the crime scene?
suspect #1
suspect #2
suspect #3
all three of them
The FBI's program of support for criminal justice DNA databases
AFIS
NIBIN
CODIS
NFD
Define Livor Mortis
The change in body temperature post mortem, until the ambient temperature is matched.
The stiffening of the joints and muscles of a body a few hours after death, usually lasting from one to four days.
An after-death paleness that occurs in those with light/white skin.
The pooling of the blood in the lowest points of the body, giving the skin a purplish-red discoloration.
Define Algor Mortis
The change in body temperature post mortem, until the ambient temperature is matched.
The stiffening of the joints and muscles of a body a few hours after death, usually lasting from one to four days.
An after-death paleness that occurs in those with light/white skin.
The pooling of the blood in the lowest points of the body, giving the skin a purplish-red discoloration.
Define Rigor Mortis
The change in body temperature post mortem, until the ambient temperature is matched.
The stiffening of the joints and muscles of a body a few hours after death, usually lasting from one to four days.
An after-death paleness that occurs in those with light/white skin.
The pooling of the blood in the lowest points of the body, giving the skin a purplish-red discoloration.
The four basic identifiers that can be determined by a forensic anthropologist are; Age, Sex, Height and Race. What is the best measurement to help determine height?
Diameter of the skull.
Width of the pelvic girdle.
Length of the femur bone.
Which bones have the growth plate fused to the long bones.
The four basic identifiers that can be determined by a forensic anthropologist are; Age, Sex, Height and Race. What is the best measurement to help determine gender?
Diameter of the skull.
Width of the pelvic girdle.
Length of the femur bone.
Which bones have the growth plate fused to the long bones.
The four basic identifiers that can be determined by a forensic anthropologist are; Age, Sex, Height and Race. What is the best measurement to help determine height?
Diameter of the skull.
Width of the pelvic girdle.
Length of the femur bone.
Which bones have the growth plate fused to the long bones.
The four basic identifiers that can be determined by a forensic anthropologist are; Age, Sex, Height and Race. What is the best measurement to help determine age?
Diameter of the skull.
Width of the pelvic girdle.
Length of the femur bone.
Which bones have the growth plate fused to the long bones.
The cause of death can be natural (disease or old age), Accidental, Homicide, Suicide or Proximate. Proximate cause of death refers to death from an underlying condition as opposed to the final cause. Which of the following is an example of a proximate cause of death.
A person trips and falls down the stairs, breaks their neck and dies from asphyxiation.
A person that was exposed to high levels of radiation develops cancer and dies from internal bleeding.
A person is stabbed multiple times and dies from loss of blood.
A person with high blood pressure and clogged arteries has a heart attack and dies from lack of oxygen to the heart.
What is the first insect that may be found on a body during the fresh stage of decomposition.
Dermestid Beetles
Mites
Blow Flies
Wasps
During an autopsy, what are the initial steps that must be completed to collect evidence from the body before the body is removed from the body bag.
Height and weight of the body, notations of any open wounds anywhere on the body and photographs and x-rays of the body
Photographs and x-rays, trace evidence from the clothing and trace evidence from the hands.
Trace evidence from the hands, notations of open wounds anywhere on the body, and general physical description of the person (hair color, eye color, approximate age, gender etc..).
Trace evidence from the clothing, height and weight of the body and notation of unique physical markers (i.e. tattoos, piercings, scars from accidents or surgery etc...).
Why are body fluids drawn from the body during an autopsy?
To determine if the cause of death is due to internal bleeding
To prevent body fluids from leaking out of the body once it is cut open.
To test the fluids for the presence of drugs and/or toxins that may be the cause of death.
To determine if the death was a homicide or a suicide.
