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Forensics-crump
Chapter 9,12&14 test
| Question | Answer |
|---|---|
| Microscopic hair comparision must be regarded by police and courts as: | presumptive |
| Which of the following properties should be examined when comparing two synthetic fibers: | medullary index |
| In making har evaluations,its is best to view the hairs using_______ microscope. | Comparison |
| The layers of the hair shaft are the: | cuticle;cortex;medulla |
| The cortex of the hair derives its major forensic importance from the fat that is contains: | pigments |
| Forcibly removed hairs are most likely to porvided useful DNA evidence because they bear: | follicular tissue |
| Hair can best be characterized as originating from an animal by examining: | medulla & cuticle |
| A human head hair is best characterized by: | absent medulla orless than 1/3 in diameter |
| It is a virtual certainty that two fabrics share a common orgin if their fibers: | can be fitted together at the torn edges |
| Which of the following properties should be examined when comparing two fibers: | color;birefringene;diameter;delustering particle |
| Wayne Williams was convicted of serial murder mainly on the strength of | fiber evidence |
| The portion of the hair contanng the scales is: | cuticle |
| Two hairs from the same head my not have the same: | morphological characteristics |
| Hit-and-run accidents may result in blood, hair, glass and ______ types of evidence | fibers |
| The monomers involved in the synthesis of porteins are | amino acids |
| Cellulose is the basic component of | wood |
| The rate of human hair growth per month is: | 1cm |
| The visible light microspectrophotometer is a convenient tool with which to compare the color of fibers because very small _______ can be compared. | samples |
| Rayon is classified as a | synthetic fiber |
| Before the 20th century,all fibers were | natural |
| The pointed end of a bloodstain always faces: | in its directions of travel |
| A 90degree angle of a blood droplet will | be appx circular in shape |
| The most common type of bloodstain pattern foound at a crime scene is: | impact spatter |
| The velocity classification of an impact spatter pattern: | cannot illuminate the specific events tat produced pattern. |
| The intersection of straight lines through the long axis of serveral individual bloodstains in an impact spatter pattern illustrates the ______ f the patteren. | area of convergence |
| If a murder victim's blood is found n the muzzle of a firearm: | it can be concluded that the firearm was present during injry to the victim. |
| Which weapon would create cast-off patterns consisting of small droplets in a linear pattern? | knife |
| The presre of the pumping of oxygenated blood out of an injuy causes bright red-colored blood to surt out and form: | arterial sray pattern |
| A ______ pattern is when the removal f an object or surface that was located between the origin of blood and the target surface during the bloodstain deposition leaves behind. | void |
| When an object with blood on it touches one that doesn not have blood on it, this produces a(n): | contact pattern |
| Widely spaced bloody shoeprints with satellite spatter between the shoeprints were likely deposited by an individual who was: | running |
| By counting and pairing the patterns of a(n)_______ pattern, an ivestigator can estimate the minimum number of blows inflicted upon a victim. | cast-off |
| Simple transfer patterns are produced when the object makes contact with surface and the object is removed without any _________. | movement |
| The _________ of a bloodstain pattern in teh 3D space illustrates the position of the victim or suspect when the stain-producing event took place. | area of orgin |
| Generally, bloodstain diameter ____as height increases. | increases |
| Proper location and documentation of bloodstain patterns t the crime scene is responsibility of: | the lead investigator |
| How should blood-ontaining clothes froma ictim be packaged | in paper bag after dried. |
| _____ regions of mitochondrial DNA have been found to b hihgly aiable in the human population for forensic determinations. | Two |
| DNA analysts are able to examine samples containing a few as _____ cells for a STR profile. | 18 |
| Each cycle of the DNA Thermal Cycler takes approx ___ mins. | 2 |
| DNA profile cannot provide information helful in determining whether an individual carries a genetic ________. | defect |
| The PCR technique requires the use of a thermal cycler to_______. | copy DNA |
| In DNA replication polymerases help assemble the ________ strands in proper base sequence. | new DNA |
| The buliding blocks of DNA molecule are known as: | nucleotides |
| The individuality of an organism is determined by the organism's: | DNA nucleotide sequence |
| There are ___ nitorgenous bases needed to code for a specific amino acid. | 3 |
| If blood is found o have both A&B antigens is is typed as: | AB |
Created by:
BallisticsGal