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WorksheetsForensic Science Final
Total questions: 55
Worksheet time: 14hrs 45mins
What parts of blood are forensically important for determining blood type?
plasma
platelets
red blood cells
A preliminary (or presumptive) test for blood is...
Kastle-Meyer
Hexagon OBTI
Takayama test
Which of the following are considered to be body fluids?
blood
seminal fluid
saliva
all of the above
A blood "spatter" pattern occurs when blood is shed...
dripping under the force of gravity
altered by another object after it is shed
shed under some kind of force other than gravity
Which of the following is a passive bloodstain?
vertical drips
impact spatter
cast off
An example of an "altered" bloodstain is...
high impact spatter
A wipe
cast off
A blood drop has a length of 5mm and a width of 2.5 mm, what is the impact angle?
45 degrees
20 degrees
30 degrees
Type A blood contains type ______ antibodies.
A
B
O
What is luminol used for?
To collect dry blood samples
To determine the point of origin of blood
To detect blood that is not visible to the naked eye
The area of convergence can be determined by
drawing lines through oblong blood drops
using luminol
doing mathematical calculations
This laboratory procedure is known as
CLONING
gel electrophoresis
chromatography
use of a dichotomous key
A student performed a gel electrophoresis experiment. The results are represented in the diagram
below. Compared to the fragments at the top of the gel, the fragments at the lower end are
larger, and move slower
larger, and move faster
smaller, and move faster
smaller, and move slower
Gel electrophoresis is used to separate DNA fragments on the basis of which property?
size
color
functions
chromosomes
If the micropipette in this image is a P20 (which measures volumes from 2-20 microliters), how many microliters could it measure?
0.98
9.8
98
980
When using a micropipette you should go to which stop prior to taking in liquid?
1st
2nd
none, enter the liquid first
either, it doesn't effect your results
The scale-like structure covering the exterior of a hair is the...
Cuticle
Medulla
Cortex
Follicular Tag
VOCABULARY: The main body of the hair shaft.
Cuticle
Medulla
Cortex
Follicular Tag
VOCABULARY: A cellular column running through the center of the hair.
Cuticle
Medulla
Cortex
Follicular Tag
What is the correct sequence of development for blowflies?
first instar, second instar, third instar, pupa, adult
egg, larva, pupa, adult
egg, second instar, third instar, pupa, adult
egg, pupa, maggot, adult
What is insect succession?
The sequence in which an egg becomes an adult fly.
A sequence of changing species that inhabit a decomposing body.
The depositing of eggs.
When the alpha fly is overthrown by his son.
Oviposition is
the laying of eggs.
the depositing of dead bodies.
the area where bugs can be found.
position of a dead body.
What can entomologists know by studying the insects at a crime scene?
who the victim is
PMI
who probably commited the crime
the crime autopsy
How does temperature have an effect on insect evidence?
temp. does not effect insect evidence
high temp. speeds up insect's life cycle
low temp. speeds up insect's life cycle
Some insect species will get to the body first because they feed on the fresh corpse while others are attracted to one that has been dead for weeks
true
false
Estimations of the postmortem interval (PMI) using entomological evidence must take into account ______________________.
the species of insect present
weather conditions
geographical locations of the decedent's body
all of these
The 4 classes of drug are:
Steroid, illicit, dangerous, narcotic
Medicinal, Illicit, Legal, illegal
Stimulant, Depressant, narcotic, Hallucinogen
Cocaine and Methamphetamines are:
Stimulants
Depressants
Hallucinogens
What does a damaged hair root tell investigators?
The hair was forcefully removed.
The suspect was attacked.
There was a struggle.
The hair fell out of the person's head.
What are the three layers of hair?
Medulla, keratin, cortex
Cuticle, medulla, keratin
Keratin, cuticle, cortex
Medulla, Cortex, and Cuticle
Which of the following hair types has an oval cross section?
Caucasian
African
Asian
None of the above
The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil)
Cuticle
Medulla
Cortex
The tough outer covering of a hair composed of overlapping scales. (outer part of pencil)
Cortex
Cuticle
Medulla
The hair follicle is dormant (not growing hair anymore) and hairs are easily lost during which stage of the hair life cycle?
Anagen
Telogen
Catagen
Metagen
The picture shows a __________ hair.
human
animal
Size, brand, and tread design are all _________ characteristics that are common among a group of footwear and tires.
class
individual
amorphous
composite
material
Individual characteristics are unique identifiers observed only on an individual’s footwear or tire tread. Which of the following is an accurate list of individual characteristics?
Brand, scratches, debris, and wear patterns
Size, scratches, debris, and wear patterns
Tread design, scratches, debris, and wear patterns
Cuts, scratches, size, and wear patterns
Cuts, scratches, debris, and wear patterns
What type of evidence is impression evidence (tire and shoe prints)?
Class Only
Individual Only
Trace Only
Class and Individual, depending on the characteristics
Forensic Science is
microscopes used for vapor
the applications of testing
applying principles of science to the law
the application of evidence to testing
A medical examiner determines the cause of death through autopsy.
True
False
What blood spatter pattern is seen in the picture?
Cast Off
Medium Velocity
Void
High Velocity
Two of these are correct
