PCR – Final Exam – Criminalistics
The key terms in this Criminalistics / Forensics course include sniffers, Polmerase chain reaction, PCR.
A reagent which reacts to blood and causes it to luminesce is :
Luminol
Benzidine
Takayama
Acid phosphotase
Spermine
A single handwriting characteristic by itself can be taken as a basis for a positive comparison.
True
False
A stain can be tentatively identified as blood by:
the benzidine test
the luminol test
the phenolphthalein test
the lucomalicite green test
all of the above
The sample size of controlled substances submitted to the laboratory should exceed the required weight to file the desired drug charge.
True
False
The structure of DNA requires the paring of the base A to C and the base G to T.
True
False
The ultimate value of soil as evidence is dependent on its variation at the crime scene.
True
False
The use of dogs and sniffers at arson scenes are of no value.
True
False
The Polmerase chain reaction (also know as PCR) is a process that occurs outside the cell and mimics the cells own ability to replicate itself. The process is the most commonly used type of testing in modern forensic DNA labs.
True
False
Usually, when a person’s blood alcohol concentration is in the range of .10 percent, horizontal gaze nystagmus will begin before the eyeball has moved _______________ degrees to the side.
30
45
60
90
Variations in mechanical, physical, and mental functions make it unlikely that the writing of two individuals can be distinguished.
True
False
What are the two principles that Questioned document examiners rely upon for the comparison of hand writing samples?
Answer:
What does a DRE (drug recognition expert) do?
Answer:
A DRE is a law enforcement officer who is trained to detect drug impairement or influence. They do so through a 12 step method.
Which of the following is a good example of packaging for fire debris in which an accelerant is to be looked for from materials at a scene:
Ziploc bag
Pill box
Paper bindle
metal can
A reagent which reacts to blood and causes it to luminesce is :
Luminol
Benzidine
Takayama
Acid phosphotase
Spermine
A single handwriting characteristic by itself can be taken as a basis for a positive comparison.
True
False
A stain can be tentatively identified as blood by:
the benzidine test
the luminol test
the phenolphthalein test
the lucomalicite green test
all of the above
The sample size of controlled substances submitted to the laboratory should exceed the required weight to file the desired drug charge.
True
False
The structure of DNA requires the paring of the base A to C and the base G to T.
True
False