Criminalistics Final Test
Card Set Information
Criminalistics Final Test
Finals for Criminalistics -Comprehensive Review
The exchange of evidence principle was ?
Nitrogenous base NOT found in DNA
Who developed system where measurements of body used for ID purposes?
The structure of DNA requires base pairing of ______.
T & A (thalamine & atamine)
Case of "General Acceptance"
Frye vs U.S.
Basic of crime scene reporting does not include ___________
______ can produce many exact copies of DNA segments.
PCR (polymerase chain reaction)
ALL Evidence should be packaged ______
STR analysis has replaced RFLP, DNA typing, etc. All?? or which ones?
All of the above
Best way to guarantee evidence will withstand from collection to court is
Chain of custody
Amount of DNA required for STR analysis is ________ RLFP analysis
Physical evidence can be obtained from what?
crime scene, evidence, victim, suspect -- ALL OF ABOVE
2 strands of DNA that have been separated, basic widths on one strand is ATCG, what is 2nd strand?
Visible evidence has a ___________ than that of testimonial evidence.
or--- Physical evidence is considered to have ________ than testimonial evidence?
Clothes containing blood should be packaged in ______
breathable paper after blood dries
Evidence of tampering with position of a dead body is _______
Pointed end of blood stain _______ its direction of travel
Rigor refers to ?
stiffness of body
a murdered victim's blood found in a muzzle of firearm means ??
firearm was present at time of murder
computerized data base used to store DNA is ______
REmoval of object off surface between origin of blood and target surface is _______
nucleus of an atom contains ________
protons and neutrons
Proper location & documentation of blood stain patterns is responsibility of who?
all crime scene personnel
which microscope has the largest potential working space?
crime scene reconsruction requires what: piecing together, ME, etc -
ALL of above
side by side view of 2 specimens is best obtained with __________
______ transfer patterns are when the object makes contact with surface and object is removed without any movement
_____ national fingerprint system
which is most widely used illegal drug in US today?
Which is NOT a layer of hair shaft?
________ eliminates the desire for heroin
central canal running through many hairs?
sniffing of volatile solvents can cause what?
dizziness, death, etc. ALL ABOVE
collection of fiber evidence should be collected with great care to ??
avoid cross contamination
Most ofen cocaine is _____
what is true about Rohibnul (club drug)
LOC, dizziness, etc. ALL ABOVE
Paint, as physical evidence is mostly encountered in ??
hit and run
the controlled substance act established 5 schedules of medicines. name a few
abuse, pain mgt, addiction, etc. ALL
3 layers of hair shaft are ?
cuticle, cortex, medulla
drugs deemed to have highest potential for abuse & having current medical use in which schedule?
Tell-tell signs of arson include
Synthetically produced drug and not natural?
fingerprint classification used & devised by ?
Club drugs are - name some ?
Rohibnul, MDMA ALL ABOVE
Incident that changed system from body measurment to fingerprinting in 1903?
Will West and William West - double with similar name
Factor in determining rate absorbed alcohol?
weight, amount, etc. ALL ABOVE
which circumstances have identical fingerprints ?
none to date
There is a _______ relationship betweennt amt of alcohol and the alveoli
what is the minimum # of ridge characters needed before 2 fingerprints establish a positive ID
No Minimum exists
Field sobriety test do not include what?
to analyze blood for alcohol, labs use ?
GC (gas chromatography)
prints not readily visible?
upon entering bloodstream, heroin is almost immediately metabbolized into _________
A DRE (drug recognition expert) can determine if a person has ??
taken one or more drugs
Most common ridge pattern is _____
rate of alcohol absorption on a full stomach is _______ the absorption on an empty stomach
prints impressed in a bar of soap are referred to as _______ prints
alcohol is eliminated from the body chemically unchanged in ?
urine, breath, perspiration ALL ABOVE
which chemical treatment produces prints when applied to a white surface
alcohol is oxidized in the ______
BAC (blood alcohol concentration) level for legally under influence in most states is _____
Evidence to substantiate that a rape occurred could include ??
blood, hair, fiber, semen, etc. ALL ABOVE
buccal swabs are obtained from where?
mouth and inside cheek
Luminol can be used at a crime scene for ?
detect traces of blood without compromise
after succesfully visualizing a latent print, one should _____the print?
_______color test used to locate and characterize seminal stains?
Acid phosphatase (but teacher said "aspermice" --- need to find out ??)
fingerprint patterns that have no delta is _____
the protein ______ is unique to seminal plasma
in a point-to-point comparison of fingerprints, _______ must be demonstrated to establish identity
blood can be characterized as being of human origin by the ______ test
when drawing blood for alcohol testing, skin must be wiped with ________ swab
what is the database for firearms?
failure to add preservatives (such as Na Cl) to blood removed from living person may lead to a _______ in alcohol concentration
the primary constituent of opium is ____
gunpowder residue patterns can be detected by _____ & _______
and IR photography
narcotic drugs are ______ that ________ the central nervous system.
(teacher said "is analgesics that "Stimulate" the CNS" --- need double check)
to prevent disturbance of latent fingerprints, a gun should be lifted by ________
The ___________ focuses a beam of electrons
scanning electron microscope
the presence of _______ elements in materials provides useful markers in physical evidence
tools & tool marks found at a scene by the _______ would include taking photos & cast of marks
If COD cannot be found through simple observations of victim, _____ is typically carried out
possibility of recognizing known handwriting habits of an intoxicated person is _________ produced when writer is under influence
according to forensic etymologists, which is first to arrive at crime scene?
techniques used to estimate time of death?
vitreous, rigor, temp etc. ALL ABOVE
rate of cooling of dead body can be influenced by all but ?? ___
gender of victim
writing characteristics of a person can be altered by what?
in dealing with fax, photo copiers, and computer printer, brand, etc. ?
Infrared luminescence is used to what?
detect if 2 different inks used
when obtaining handwriting samples, suspects are not allowed to view the document?
______ are the partially visible depressions on a sheet of paper underneath the one the visible writing was done.
Motherboard is to accept RAM?
First, obtain a _______ before processing an electronic crime scene
ultimate goal when obtaining image from a hard drive is to ??
obtain image w/o altering the drive in any way
once a file is deleted by a user?
retained until occupied &
(Disk space is needed, Identify)
_______ a group of sectors in multiples of 2
__________ is unathorized intrusion of a computer
which actions are taken at a crime scene involving a computer?
You have to remove plug, photograph and sketch, etc
all data readily available to a computer user is known as ______
definition of software?
set of instructions that perform a particular task
which unit has responsibility of examining body fluids & organs for drugs or poisons?