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15
×
A fiber's microscopic appearance being ribbon-like in shape with twists at irregular intervals:
nylon
cotton
acrylic
polyester
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15
×
The medullary index of a hair was calculated to be 0.498. The hair is more likely to be:
from a baby
from a human
from a plant
from an animal
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15
×
If hair does not have DNA, an expert witness is on best scientific footing when stating that...
a suspect hair comes from a particular animal species
the given hair comes from a specific person
the hair in question comes from a 21-year old
his examination reveals that the hair is that of a male
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thief
Give points!
5
10
15
20
25
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gold
Win 50 points!
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fairy
Take points!
5
10
15
20
25
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thief
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5
10
15
20
25
15
×
Determining whether a hair sample originated from male or female, the MOST important factor is:
whether the hair is bleached
the length of the hair
whether the hair was dyed
the results of DNA analysis performed on the root structure
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15
×
The fiber dissolves in HCl. It is more likely to be:
wool
cotton
acetate
nylon
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15
×
Before the 20th century, all fibers were
natural
derived
synthtic
chemically treated
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seesaw
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magnet
Take 25 points!
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gift
Win 20 points!
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baam
Lose 25 points!
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15
×
Can age be determined by hair alone
no
yes
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15
×
What are functions of hair
all of the responses
protection
facilitation of evaporation of perspiration
regulation of body temperature
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15
×
Hair can be best characterized as originating from an animal by examining
the hair shaft
the medulla and cuticle
its scale structure
the growth pattern
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15
×
The most prevalent natural plant fiber is...
hemp
silk
cotton
linen
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15
×
The portion of the hair containing its scales is best characterized by
the cortex
the follicle
the cuticle
the root
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15
×
Medullae may be classified as being..
fragmented
all of the above
continuous
interrupted or absent
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heart
Other team wins 15 points!
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gift
Win 10 points!
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fairy
Take points!
5
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15
20
25
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thief
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5
10
15
20
25
15
×
Which feature of hair is MOST important in making species identification?
shaft lenghth
follicle shape
scale pattern
bulb size
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