CY110_ Forensic Science Chapter 13 Quiz

Question 1

10 / 10 pts

Wayne Williams was convicted of serial murder mainly on the strength of:

Correct!

fiber evidence.

bite mark comparisons on victims.

blood analysis.

DNA studies from bone fragments.

paint chips.

Question 2

10 / 10 pts

Which part of the hair shaft is most resistant to chemical decomposition?

cortex

medulla

follicle

Correct!

cuticle

root

Question 3

10 / 10 pts

The elements that comprise the inorganic pigments of paint can be identified by:

X-ray diffraction.

neutron activation analysis.

emission spectroscopy.

X-ray spectroscopy.

Correct!

all of these

Question 4

0 / 10 pts

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

You Answered

very small samples can be compared.

fibers can be studied right on microscope slide.

fibers are not destroyed.

Correct Answer

all of these

none of these

Question 5

10 / 10 pts

A fiber whose microscopic appearance includes being ribbon-like in shape (flat) with twists at irregular intervals is:

polyester.

Correct!

cotton.

kapok.

linen.

silk.

Question 6

10 / 10 pts

Which feature of hair is MOST important in making a species comparison?

follicle shape

scale pattern

bulb size

Correct!

shaft length

color

Question 7

10 / 10 pts

Which was the first man-made fiber?

nylon

polyester

acetate

Correct!

rayon

Dacron

Question 8

10 / 10 pts

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 same as

less than

Correct!

greater than

Question 9

0 / 10 pts

Which is made of natural polymers?

plastic

nylon

Correct Answer

starch

You Answered

paint

sand

Question 10

10 / 10 pts

The central canal running through many hairs is known as the:

shaft.

Correct!

medulla.

cuticle.

cortex.

root.

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