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WorksheetsForensics Ch. 3 Hair Evidence
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
The central core of the hair is called the...?
a)
Medulla
b)
Cuticle
c)
Cortex
d)
Shaft
2.
Hair with a round cross section and a large diameter is classified as...?
a)
Asian
b)
African
c)
European
3.
A microscope that views side by side images of hair samples is called...?
a)
Fluorescence microscope
b)
Electron microscope
c)
Comparison microscope
d)
Compound microscope
4.
The technique that can identify up to 14 different elements in a single strand of human hair is...?
a)
Mass Spectrometry
b)
Neutron Activation Analysis
c)
Gel Electrophoresis
d)
Fractional Distillation Analysis
5.
The network of blood vessels that supply the nutrients to feed the hair and help it grow is...?
a)
Medulla
b)
Papilla
c)
Cortical fusi
d)
Follicle
6.
How often does a full head of hair get replaced?
a)
Every
year
b)
Every other year
c)
Every third year
d)
Every four years
7.
What tool was used to cut the hair shown in this picture?
a)
Clippers
b)
Razor
c)
Scissors
d)
Uncut
8.
People with different colors of hair tend to have different amounts of hair. Individuals with which hair color tend to have the most hair?
a)
Blonde
b)
Brunette
c)
Red
d)
Gray
9.
After getting up from your desk chair, you see that you transferred one of your hairs to the chair. This is an example of what?
a)
Primary
Transfer
b)
Secondary
Transfer
c)
Tertiary
Transfer
d)
Quaternary Transfer
10.
Which gland secretes oil and causes hair to be oily?
a)
Sebaceous
b)
Adrenal
c)
Pineal
d)
Eccrine
11.
Hair analysis may be used to determine all of the following except:
a)
manner
in which the hair was removed
b)
body
region from which the hair came from
c)
broad racial
background of the individual from which the hair came from
d)
identity of the
individual from which the hair came from
12.
The main purpose of hair is to:
a)
Protect
against sunlight
b)
Decrease
friction
c)
Aid
in sensory
d)
Regulate
body temperature
13.
Human hairs generally have what two types of medulla?
a)
Continuous
or interrupted
b)
Fragmented
or none
c)
Solid
or interrupted
d)
Fragmented
or solid
14.
When hairs found at a crime scene look similar to those collected from a suspect, this is called...?
a)
Association
b)
Exclusion
c)
Inconsistency
d)
Perfect match
15.
The pigment which gives color to blonde and red hair is called...?
a)
Eumelanin
b)
Pheomelanin
c)
Beta-melanin
d)
Alpha-melanin
16.
When collecting hairs from a suspect to compare to those found at a crime scene, how many control hairs should be collected from the head?
a)
1
b)
25
c)
50
d)
100
17.
The average hair grows how much per month?
a)
1.3
cm
b)
2.4
cm
c)
.5
cm
d)
3.2
cm
18.
Rodent and bat hair has which type of cuticle?
a)
imbricate
b)
spinous
c)
coronal
d)
elongate
19.
What is the first step in testing the hair shaft for substances such as drugs?
a)
washing
the hair
b)
dissolving
the hair
c)
bleaching
the hair
d)
burning
the hair
20.
When being compared to a wooden pencil, which part of hair represents the lead?
a)
medulla
b)
cortex
c)
cuticle
d)
follicular tag
21.
The best method to pick up hairs over a large surface area is...?
a)
gloves
b)
forceps
c)
tape lift
d)
vacuum
22.
What tool was used to cut the hair shown in this picture?
a)
Clippers
b)
Razor
c)
Scissors
d)
Uncut
23.
The transitional or regressive stage that lasts a few weeks during which hair growth slows is called...?
a)
Anagen
b)
Telogen
c)
Catagen
d)
Metagen
24.
The hair follicle is dormant and hairs are easily lost during which stage of the hair life cycle?
a)
Anagen
b)
Telogen
c)
Catagen
d)
Metagen
25.
The pigment which gives color to brown and black hair is called...?
a)
Eumelanin
b)
Pheomelanin
c)
Beta-melanin
d)
Alpha-melanin
26.
Uncut, scissors, razor, and clippers all give unique shapes to what part of a hair?
a)
Cuticle
b)
Shaft
c)
Follicular tag
d)
Distal tip
27.
Why type of medulla is frequently found in the hairs of Native Americans and Asians?
a)
Continuous
b)
Interrupted
c)
Fragmented
d)
Solid
28.
In order to determine if a hair is from an animal or human, one should divide the diameter of the...
a)
medulla by the entire hair
b)
medulla by the cortex
c)
cortex by the medulla
d)
cortex by the entire hair
29.
What tool was used to cut the hair shown in this picture?
a)
Clippers
b)
Razor
c)
Scissors
d)
Uncut
30.
Bleaching hair removes pigment granules and gives hair a...
a)
Shiny
cuticle
b)
Dark
cortex
c)
Yellow
tint
d)
Grey
shadow
31.
In many mammals, hair can be very dense, and it is then referred to as:
a)
Coat
b)
Fur
c)
Pelt
d)
Down
32.
We know hair is from a human if…
a)
The medullary index is 0.5 or greater
b)
The medullary index is 0.33 or less
c)
The cuticle is coronal
d)
The medulla is fragmented
33.
How long does it take for newly cut hairs to take on an uncut, rounded shape?
a)
4-5
days
b)
2-3
weeks
c)
1
month
d)
3
months
34.
When collecting hair as evidence, a detective should NOT do which of the following?
a)
Pluck
hairs from the suspect’s head
b)
Cut
hairs from the suspect’s head
c)
Collect
loose hairs from the suspect’s head
d)
A
detective should do all of the above
35.
Hair is helpful in solving old crimes because…
a)
hair on a suspect never
changes
b)
hair always contains DNA evidence
c)
hair takes little room to store
in evidence closets
d)
hair does not easily decompose
36.
When being compared to a wooden pencil, which part of hair represents the wood?
a)
medulla
b)
cuticle
c)
follicular tag
d)
cortex
37.
Small sacs of air found within the cortex are called...?
a)
central embolism
b)
cortical fusi
c)
air granules
d)
oval bodies
38.
The hair shaft is composed of what important protein?
a)
Cellulose
b)
Chitin
c)
Peptidoglycan
d)
Keratin
39.
When collecting hairs from a suspect to compare to those found at a crime scene, how many control hairs should be collected?
a)
100 from all over the body
b)
50 from head; 25 from pubic region
c)
75 from head; 25 from pubic region
d)
25 from head; 75 from arms, legs, and pubic region
40.
What type of container can be used in place of a paper bindle for packaging strands of hair evidence?
a)
plastic bag
b)
pill bottle
c)
coin envelope
d)
aluminum foil
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