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Exam 11: Hairs and Fibers

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Question 51

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Hair is an appendage of the skin that grows out of an organ known as the hair ________.

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Question 52

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Which of the following is not an example of a natural polymer?

A) Starch
B) Cellulose
C) Sugar
D) Proteins

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Question 53

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The visible light microspectrophotometer is a convenient tool with which to compare the color of fibers because:

The presence of sheath cells on hair that has been pulled quickly from the head is ________ the presence of sheath cells on hairs that have been removed slowly from the scalp.

The entire hair is collected because a hair may show variation in color and other morphological features over its entire length.

Cellulose is the basic component of:

Why must questioned hairs and standard/reference hairs being compared come from the same area of the body?

A hair sample was examined and its medulla appeared to have a pattern described as resembling a string of pearls.It was most likely from a:

The scale pattern is not a useful characteristic for individualizing a human hair.

It is not necessary for questioned and standard/reference hairs to come from the same area of the body.

Nuclear DNA typing can be most successfully accomplished on hairs that have been removed during which stage of growth?

Mohair and cashmere are hairs from:

Fibers are classified as being natural or ________.

Which race is most likely to have head hair with continuous medullae?

Manufactured fibers have increasingly replaced natural fibers in garments and fabrics.

Forensic hair comparisons generally involve either ________ hair or pubic hair.

Synthetic fibers display ________ because they are crystalline.

A regenerated fiber can be derived from:

The cuticle is formed by overlapping scales that always point away from the tip end of each hair.

A criminalist first compares the color and ________ of fiber evidence.