Question 1

In determining whether a hair sample originated from a male or a female, the MOST important consideration is:

Accepted Answer

A) Whether the hair is bleached. 
B) The results of DNA analysis performed on the root structure. 
C) Whether the hair was dyed. 
D) The length of the hair. 
A) Whether the hair is bleached. 
B) The results of DNA analysis performed on the root structure. 
C) Whether the hair was dyed. 
D) The length of the hair.

Question 2

Name the three phases of hair growth. A criminalist is more likely to collect DNA from hairs in which stage of growth? Why?

Accepted Answer

(should include points such as):
The thr

Question 3

Finding white cotton fibers at a crime scene is nearly meaningless due to its wide use.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is NOT a layer of the hair shaft?

Accepted Answer

A) Cuticle 
B) Cortex 
C) Medulla 
D) Follicle 
A) Cuticle 
B) Cortex 
C) Medulla 
D) Follicle

Question 5

When collecting fiber evidence, great care should be taken to:

Accepted Answer

A) Avoid cross-contamination of evidence. 
B) Shake off all garments to be sent for examination before neatly folding them. 
C) Send as much potential evidence as possible to the crime lab to ensure that nothing is missed. 
D) Package all items from each individual together in one bag to avoid later confusion. 
A) Avoid cross-contamination of evidence. 
B) Shake off all garments to be sent for examination before neatly folding them. 
C) Send as much potential evidence as possible to the crime lab to ensure that nothing is missed. 
D) Package all items from each individual together in one bag to avoid later confusion.

Question 6

A storefront window is broken and a robbery committed. A suspect is later found running from the scene. Examination of his shoes reveals glass particles embedded in a heel. Describe the proper collection and preservation of glass evidence for laboratory examination.

Accepted Answer

(should include points such as):
-The en

Question 7

Which of the following properties should be examined when comparing two fibers?

Accepted Answer

A) Color 
B) Diameter 
C) Birefringence 
D) All of the above 
A) Color 
B) Diameter 
C) Birefringence 
D) All of the above

Question 8

Describe the process of floatation and explain what it is used for.

Accepted Answer

(should include points such as):
Flotati

Question 9

Forcibly removed hairs are most likely to provide useful DNA evidence because they bear:

Accepted Answer

A) Catagenic roots. 
B) Telogenic roots. 
C) Follicular tissue. 
D) Mitochondria. 
A) Catagenic roots. 
B) Telogenic roots. 
C) Follicular tissue. 
D) Mitochondria.

Question 10

A microscopic examination can tell whether a hair is from a scalp or a beard.

Accepted Answer

A) True 
 B)False

Question 11

What two models do scientists use to explain the nature of light? Under what conditions does each model best describe the behavior of light?

Accepted Answer

(should include points such as):
-The fi

Question 12

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

Accepted Answer

The answer of Forensic hair comparisons generally involve either ________...

Question 13

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once.
A)Fibers derived from either natural or synthetic polymers
B)A transition stage between the anagen and telogen phases of hair growth
C)Two or more atoms held together by chemical bonds
D)A cellular column running through the center of the hair
E)DNA that is present in the nucleus of a cell and that is inherited from both parents
F)The scale structure covering the exterior of the hair
G)The final growth phase in which hair naturally falls out of the skin
H)DNA present in small structures outside the nucleus of a cell.. This form of DNA is inherited maternally (from the mother).
I)A substance composed of a large number of atoms that are usually arranged in repeating units
J)The main body of the hair shaft
K)Fibers derived entirely from animal or plant sources
L)The basic unit of structure from which a polymer is constructed
M)A molecule with a high molecular mass
N)The initial growth phase during which the hair follicle actively produces hair
O)A translucent piece of tissue surrounding the hair's shaft near the root that contains the richest source of DNA associated with hair
-Monomer

Accepted Answer

The answer of Match the word in Column 1 to...

Question 14

Which of the following properties should NOT be examined when comparing two synthetic fibers?

Accepted Answer

A) Presence or absence of delustering particles 
B) Diameter 
C) Lengthwise striations 
D) Medullary index 
A) Presence or absence of delustering particles 
B) Diameter 
C) Lengthwise striations 
D) Medullary index

Question 15

Hair tends to exhibit variable morphological characteristics, not only from one person to another but also within a single individual.

Accepted Answer

A) True 
 B)False

Question 16

Which step in the examination of fibers would logically be taken first?

Accepted Answer

A) Examination of dye composition using visible light microspectrophotometer 
B) Make a cross-sectional view of the fibers 
C) Microscopic examination for color and diameter of fibers 
D) Infrared spectrophotometry 
A) Examination of dye composition using visible light microspectrophotometer 
B) Make a cross-sectional view of the fibers 
C) Microscopic examination for color and diameter of fibers 
D) Infrared spectrophotometry

Question 17

Which is NOT a synthetic fiber?

Accepted Answer

A) Rayon 
B) Polyester 
C) Acrylic 
D) All of the above are synthetic 
A) Rayon 
B) Polyester 
C) Acrylic 
D) All of the above are synthetic

Question 18

Fibers are classified as being natural or ________.

Accepted Answer

The answer of Fibers are classified as being natural or...

Question 19

Cellulose is the basic component of:

Accepted Answer

A) Sugar. 
B) Starch. 
C) Wood. 
D) Wool. 
A) Sugar. 
B) Starch. 
C) Wood. 
D) Wool.

Question 20

Fibers manufactured from natural raw materials are ________ fibers.

Accepted Answer

The answer of Fibers manufactured from natural raw materials are...

In determining whether a hair sample originated from a male or a female, the MOST important consideration is:

Name the three phases of hair growth. A criminalist is more likely to collect DNA from hairs in which stage of growth? Why?

Finding white cotton fibers at a crime scene is nearly meaningless due to its wide use.

Which of the following is NOT a layer of the hair shaft?

When collecting fiber evidence, great care should be taken to:

A storefront window is broken and a robbery committed. A suspect is later found running from the scene. Examination of his shoes reveals glass particles embedded in a heel. Describe the proper collection and preservation of glass evidence for laboratory examination.

Which of the following properties should be examined when comparing two fibers?

Describe the process of floatation and explain what it is used for.

Forcibly removed hairs are most likely to provide useful DNA evidence because they bear:

A microscopic examination can tell whether a hair is from a scalp or a beard.

What two models do scientists use to explain the nature of light? Under what conditions does each model best describe the behavior of light?

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

Which of the following properties should NOT be examined when comparing two synthetic fibers?

Hair tends to exhibit variable morphological characteristics, not only from one person to another but also within a single individual.

Which step in the examination of fibers would logically be taken first?

Which is NOT a synthetic fiber?

Fibers are classified as being natural or ________.

Cellulose is the basic component of:

Fibers manufactured from natural raw materials are ________ fibers.

Introduction

The Crime Scene

Physical Evidence

Crime Scene Reconstruction: Blood Stain Pattern Analysis

Death Investigation

Fingerprints

Forensic Biometrics

The Microscope

Firearms, Tool Marks, and Other Impressions

Matter, Light, and Glass Examination

Drugs

Forensic Toxicology

Metals, Paint, and Soil

Forensic Serology

DNA: The Indispensable Forensic Science Tool

Forensic Aspects of Fire and Explosion Investigation

Document Examination

Computer Forensics

Mobile Device Forensics

Filters

Exam 11: Hairs and Fibers

In determining whether a hair sample originated from a male or a female, the MOST important consideration is:

Name the three phases of hair growth. A criminalist is more likely to collect DNA from hairs in which stage of growth? Why?

Finding white cotton fibers at a crime scene is nearly meaningless due to its wide use.

Which of the following is NOT a layer of the hair shaft?

When collecting fiber evidence, great care should be taken to:

A storefront window is broken and a robbery committed. A suspect is later found running from the scene. Examination of his shoes reveals glass particles embedded in a heel. Describe the proper collection and preservation of glass evidence for laboratory examination.

Which of the following properties should be examined when comparing two fibers?

Describe the process of floatation and explain what it is used for.

Forcibly removed hairs are most likely to provide useful DNA evidence because they bear:

A microscopic examination can tell whether a hair is from a scalp or a beard.

What two models do scientists use to explain the nature of light? Under what conditions does each model best describe the behavior of light?

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

Which of the following properties should NOT be examined when comparing two synthetic fibers?

Hair tends to exhibit variable morphological characteristics, not only from one person to another but also within a single individual.

Which step in the examination of fibers would logically be taken first?

Which is NOT a synthetic fiber?

Fibers are classified as being natural or ________.

Cellulose is the basic component of:

Fibers manufactured from natural raw materials are ________ fibers.

Introduction

The Crime Scene

Physical Evidence

Crime Scene Reconstruction: Blood Stain Pattern Analysis

Death Investigation

Fingerprints

Forensic Biometrics

The Microscope

Firearms, Tool Marks, and Other Impressions

Matter, Light, and Glass Examination

Drugs

Forensic Toxicology

Metals, Paint, and Soil

Forensic Serology

DNA: The Indispensable Forensic Science Tool

Forensic Aspects of Fire and Explosion Investigation

Document Examination

Computer Forensics

Mobile Device Forensics

Filters