WorksheetsHair & Fibers Review
Total questions: 28
Worksheet time: 15mins
The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil in our example)
Cuticle
Medulla
Cortex
The tough outer covering of a hair composed of overlapping scales. (outer part of pencil in our example)
Cortex
Cuticle
Medulla
comparison microscope
the central core of a hair fiber
material that connects an individual or thing to a certain group
the tough outer covering of a hair composed of overlapping scales
a compound microscope that allows the side by side comparison of the samples, such as of hair or fibers
cuticle
the central core of a hair fiber
material that connects an indivisual or thing to a certain group
a type of fibrous protein that makes up the majority of the cortex of a hair
the tough outer covering of a hair composed of overlapping scales
hair follicle
the actively growing root or base of hair containing DNA and living cells
material that connects an individual or thing to a certain group
a type of fibrous protein that makes up the majority of the cortex of a hair
the tough outer covering of a hair composed of overlapping scales
To determine the medullary index, you would ______.
measure the diameter of the medulla and divide it by the diameter of the hair
measure the diameter of the hair and add it to the diameter of the medulla
measure the length of the medulla and divide it by the length of the hair
measure the diameter of the medulla and multiply it by the diameter of the cortex
Where is Nuclear DNA found in the hair?
hair shaft
root or follicle
tip
medulla
Natural fibers can be harvested from
plants and animals only
plants, animals and minerals
animals only
plants only
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 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
A natural pigment found in skin
Melanin
Cortical Fusi
Telogen Phase
Cortex
Material that connects an individual or thing to a certain group.
Class Evidence
Individual Evidence
Circumstantial Evidence
A fiber made from a man-made substance such as plastic.
Natural Fiber
Synthetic Fiber
Monomer
Natural fibers can be harvested from
plants and animals only
plants, animals and minerals
animals only
plants only
A substance composed of long chains of repeating units.
Natural Fiber
Synthetic Fiber
Polymer
Monomer
A fiber produced naturally and harvested from an animal, plant or mineral.
Fiber
Synthetic Fiber
Natural Fiber
