final

Question 1

When a forensic analyst determine the chemical composition of preparations that may contain illicit drugs such as heroin, cocaine or barbiturates, this is an example of:

Answer 1

Identification

Question 2

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

Answer 2

Medullary Index

Question 3

Assume that two strands of DNA have been separated and that the base sequence on one of strand is ATGC. What is the sequence of bases on the second strand?

Answer 3

TACG

Question 4

In the PCR process, the first step is to heat the DNA strands. This is to permit theL

Answer 4

Double Stranded molecules to separate completely.

Question 5

The rate at which large DNA fragments move through the electrophoretic gel is _____ the rate at which small DNA fragments move through the same apparatus

Answer 5

Less than

Question 6

Fingerprints that are not readily visible are commonly referred to as:

Answer 6

Latent

Question 7

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

Answer 7

Scale Pattern

Question 8

DNA is a

Answer 8

polymer

Question 9

which instrument are you going to use in the lab to characterize flammable residues?

Answer 9

Gas Chromatography

Question 10

To analyse blood for alcohol, you will use:

Answer 10

Gas Chromatography

Question 11

A microscope uses a combination of _____ to magnify an image

Answer 11

Lenses

Question 12

As the magnifying power of the compound microscope increases, the depth of the focus:

Answer 12

decreases

Question 13

Which of the following types of fingerprints is most likely to be found impressed in soft wax?

Answer 13

Plastic

Question 14

DNA analysts are able to examine samples containing as few as _____ cells from an STR profile

Answer 14

18

Question 15

The technology of DNA typing had its beginning in 1985 with the work ofL

Answer 15

Alec Jeffreys

Question 16

The amount of DNA material required for STR analysis is ____ the amount of DNA required for RFLP analysis

Answer 16

Less than

Question 17

A transparent specimen is viewed through a microscope using ____ light while an opaque object requires ____ illumination

Answer 17

Transmitted

Vertical

Question 18

The examination of a paint chip found on a hit and run victims garment side by side with paint removed from a vehicle suspected of being involved in the incident is an example of:

Answer 18

Comparison

Question 19

A compound microscope is equipped with to objective lenses (10x and 45x) and has a 10x ocular lens. The highest magnification attainable with this instrument is:

Answer 19

450x

Question 20

Which instrument are you going to use in the lab to identify drugs?

Answer 20

IR

Question 21

As the magnification of the compound microscope is increased, the field of view:

Answer 21

decreases

Question 22

Which type pf crime is LEAST likely to be solved by the use of fiber evidence?

Answer 22

Bombing

Question 23

How many different types of bases are associated with the make up of DNA?

Answer 23

4

Question 24

Which microscope plots an absorption spectrum of the item under examination?

Answer 24

Microspectrophotometer

Question 25

PCR is a technique that:

Answer 25

Can produce many exact copies of segments of DNA

Question 26

True of False: | Two hairs from the same head may not have the same morphological characteristics?

Answer 26

True

Question 27

Prints impressed in a bar of soap are referred to as:

Answer 27

plastic

Question 28

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

Answer 28

Anagenic

Question 29

In DNA replication, polymerases:

Answer 29

Help assemble the new DNA strands in proper base sequence

Question 30

The size of the specimen are in view is known as the

Answer 30

Field of View

Question 31

The building blocks of the NDA molecules are known as

Answer 31

Nucleotides

Question 32

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

Answer 32

Medulla

Question 33

Medullae may be classified as:

Answer 33

Interrupted Absent Continuous Fragmented

Question 34

In order to examine an opaque with a compound microscope, one must:

Answer 34

Use reflected illumination

Question 35

Pigment granules that impart hair with color are found in the

Answer 35

Cortex

Question 36

The microscope examination of a bullet requires

Answer 36

Reflected light

Question 37

The amplification of DNA use the Thermal Cycler take approximately:

Answer 37

30 cycles

Question 38

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

Answer 38

The results of DNA analysis performed on the root structure

Question 39

An object with the letter "L" is viewed under low power of a compound microscope. The image would appear as:

Answer 39

mirrored and upside down "7"

Question 40

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

Answer 40

Follicle

Question 41

Which is an advantage of working with short DNA fragments

Answer 41

1. more stable and less likely to break apart 2. less subject to degradation 3. quantity can be greatly ampified by PCR technology

Question 42

What are the correct base-pairing in DNA?

Answer 42

T-A | G-C

Question 43

The most important tool of the firearms examiner is the:

Answer 43

Comparison Microscope

Question 44

Which microscope provides a right-side-up image?

Answer 44

Stereocopic

Question 45

The most common ridge patter is the:

Answer 45

loop

Question 46

The magnification power of a microscope equals the magnifying power of the:

Answer 46

(objective lens)*(eyepiece lens)

Question 47

If a hair does not have a follicular tag, an expert witness is on best scientific footing when stating that:

Answer 47

The suspect hair comes from a particular animal species

Question 48

Which chemical treatment produced a white-appearing latent print?

Answer 48

Superglue Fuming

Question 49

Which microscope has the largest potential working distance?

Answer 49

Stereoscopic