forensics

The conditions of a crime scene can be compromised by all of the following actions

EXCEPT:

Taking photographs at the crime scene

The final evaluator for the value of forensic evidence is the:

Jury

The five basic services a crime lab can provide are the physcial science unit, the biology unit, the fire arms unit, the document analysis unit, and the photography unit.(TRUE OR FALSE)

True

Which judicial case set forth the most current guidelines for determining the admissibility of scientific examination in the federal courts?

Daubert v. Merrell Dow Pharmaceuticals

which of the following is NOT considered a basic method of recording a crime scene?

Infared analysis

which of the following would be responsible for examining ink from a typed letter?

document analysis unit

all evidence found at a scene should be packaged in the same container(TRUE OR FALSE)

False

who was the first to describe the application of science to the field of criminal investigation?

Gross

Which of the following is a correct procedure for collecting physcial evidence?

Bloodstained clothes should be packaged in seperate paper bags

one method of protecting against contamination of evidence is by wearing a mask(TRUE OR FALSE)

True

The pores of the sweat glands are located in the

Skin ridges

fingerprints are formed

during fetal development

CODIS is maintained by the FBI and thus does not enable local crime laboratories to electronically exchange and compare DNA profiles(TRUE OR FALSE)

False

The first systematic system of individual classification and indentification was introduced by

Alphonse Bertillon

Who ultimatley determines the significance of physical evidence in a trial

the jury

the “jigsaw fit” of known and questioned fragments demonstrates common origin when a match is made.(TRUE OR FALSE)

True

Whorls are the most common type of fingerprint patterns(TRUE OR FALSE)

false

Juries often assign scientific evidence lesser weight than other evidence(TRUE OR FALSE)

False

which database includes more than 300 manufactures of shoes with more than 8,000 different sole patterns?

SICAR

which of the following is NOT a chemical method for visualizing latent prints?

Powder

which of these is NOT part of the optical system of a compound microscope>

Body

the two types of firearms are handguns and long guns(TRUE OR FALSE)

TRUE

shortly after a weapon is fired, residues are most likely to be deposited on the thumb web and the back of the firing hand of a shooter(TRUE OR FALSE)

True

the microscope examination of a bullet requires

reflected light

Two procedures used to preserve impressions that cannot be submitted to the laboratory are lifting and casting(TRUE OR FALSE)

False

Discharged evidence bullets must be carefully handled to avoid damage to the

striation markings

the stereoscopic microscope forms an inverted and reversed image(TRUE OR FALSE)

False

what is the automated shoe print indentification system?

SICAR

a forensic scientist would use vertical illumination when studying opaque specimens(TRUE OR FALSE)

true

the body tube is part of the optical system of a compound microscope(TRUE OR FALSE)

false

a microscopic examination can tell whether a hair is from a man or a woman(TRUE OR FALSE)

false

a human head hair is best characterized by

a medulla that is absent or is less than 1/3 the overall diameter of the hair shaft

pigment granules that impart hair with color are found in the

cortex

a regenerated fiber can be derived from

cellulose

which of the following is NOT a growth phase of hair

mutagen

in making hair evaluations, it is best to view the hairs using a(n)…………..microscope

comparison

the entire hair is collected because a hair may show variation in color and other morphological features over its entire length(TRUE OR FALSE)

True

which type of test would the drug analyst logically use first

color testing

barbiturates act to:

all of the above

a breath test may be used to analyze:

alcohol

what is true about the “club drug” rohypnol commonly used in sexual assaults?

all of the choices

the most widespread method for rapidly determining alcohol intoxication is breath testing/(TRUE OR FALSE)

true

failure to keep the blood refrigerated or to add preservative may result in a substantial decline in alcohol concentration(TRUE OR FALSE)

true

a drug users expectations do not play a role in drug dependence(TRUE OR FALSE)

false

cocaine is a(n):

stimulant

a screening test gives quick insight into the likelihood that a specimen contains a drug substance while a confirmation test identifies a specific drug.(TRUE OR FALSE)

true

alcohol is eliminated from the body chemically unchanged in:

all of these options

STR analysis is the most successful and widely used DNA profiling procedure.(TRUE OR FALSE)

true

a stain can tentatively be identified as blood by

all of the above

which type of cells are NOT contained in plasma>

phagocytes

………… transport oxygen from the lungs to the body tissues and carry carbon dioxide back to the lungs.

red blood cells

the production of amino acid is coded by a sequence of how many bases on the DNA molecule?

3

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

TACG

means to detect the amelogenin gene are included in commercial STR kits used in crime labs because the gene allows determination of:

Gender

the blood factors belonging to the A-B-O system are the most important for properly matching a donor and recipient for a transfusion.(TRUE OR FALSE)

true

the reaction of luminol with blood results in the production of color rather than light(TRUE OR FALSE)

false

proteins are formed by linking a combination of nucleotides(TRUE OR FALSE)

false

which specialized area of forensic science studies the relationship between human behavior and the legal system?

forensic psychiatry

what is the purpose of collecting reference samples at a scene?

allow for comparisons to be made with evidence collected

which of the following is NOT true about digital imaging?

It does not allow for the simultaneous comparison of two prints.

the blood alcohol concetration level for being presumed to be legally “under the influence” in most states is:

0.08%

a forensic scientist would use vertical illumination when studying opaque specimens(TRUE OR FALSE)

true

Members of the Negroid race usually have head hairs with continuous medullae(TRUE OR FALSE)

false

the value of class physical evidence lies in its ability to corroborate events with data in a manner that is, as nearly as possible, free of human error and bias(TRUE OR FALSE)

true

what is NIBIN?

a database for firearm evidence

what is true about monoclonal antibodies?

all of the above

STR analysis is the most successful and widely used DNA profiling procedure.(TRUE OR FALSE)

true

the Scott test can indicate the presence of

cocaine