FORENSICS EXAM 2 PSU

opioids

According to the National Institute of Health, overdoses of which type of drugs kill more people than all other drugs combined? hard alcohol opioids heroin methamphetamine

binder

All of the following are one of the three main characteristics of hair except cuticle binder medulla cortex

false

All rocks are inorganic minerals. True False

Faster

A current of electricity is added to the antisera gel to make the antibody-antigen test Slower Faster Brighter Warmer

false

A large amount of a substance is needed if you want to run it on the GC. True False

steroids

Mood swings, hostility, impaired judgement, and aggression are side effects of which class of drugs? synthetic drugs narcotics steroids inhalants

analyte

The component of a system to be analyzed is called a(n) catalyst byproduct analyte precursor

C

The control of an ABAcard is read at which line? C S A T

micropipettor

The device used to add reagents and remove liquid from the tube containing the DNA extract is called a micropipettor dropper funnel capillary tube

Refractive index

The measurement of the light-bending ability of a substance is called the Fractional index Refractive index Diffusion index Dispersive index

True

The same DNA typing tests that are used for human DNA typing cannot be used for all animals. True False

Flat molars

The shape of crystals formed when mixing pure cocaine with platinic chloride can be described as Spikey rosettes Flat molars Sharp fangs Acicular rods

T

The test result on an ABAcard is read at which line? T A S C

plant hairs

Trichomes are a type of human hairs animal hairs insect hairs plant hairs

AB

Type ______ is the least commonly found blood type in humans. O A AB B

Electrons

UV energy excites which part of an atom? Neutrons Protons Electrons Positrons

blue

What color does luminol glow in the presence of blood? blue green orange pink

Scanning electron microscope

What does SEM stand for? Scanning electron microscope Special examination microscope Standard evaluation microscope Selective electric microscope

a. To purify a substance by washing it with solvents to remove unwanted companion chemicals

What does it mean to extract a chemical? a. To purify a substance by washing it with solvents to remove unwanted companion chemicals Running a chemical sample on a GC and then with an IR spectrophotometer, in that order Using UV light to cause chemicals to fluoresce so they can be identified Mixing an evidence sample with water until the sample has dissolved

thermal cycler

What instrument is used for PCR? thermal cycler capillary electrophoresis centrifuge PLM

spice

What is the common street name for synthetic marijuana? sugar agent M spice ecstacy

a. They can be separated into their individual components

What is useful about mixtures? a. They can be separated into their individual components They always stay mixed and cannot be broken up They are easier to test than pure substances They are pretty

True

When a particle of glass is the same refractive index as the immersion oil, the glass seems to disappear in the oil. True False

c. Assist the arson investigator in determining the cause and origin of the fire

When working a case of suspected arson, the job of the fire debris analyst is to Assist the arson investigator in determining the motive of the arsonist Assist the arson investigator in determining the suspect is guilty c. Assist the arson investigator in determining the cause and origin of the fire Assist the arson investigator in determining the value of the property damage

guanine

Which base does cytosine bond with to make a base pair in DNA? guanine cytosine adenine thymin

atmospheric

Which of the following is not one of the three basic types of rock? metamorphic atmospheric sedimentary igneous

release

Which of the following is not one of the three steps of PCR? release denature anneal extend

D. The number above each peak represents the atomic weight of the compound identified by the detector

Which of the following is not true about the peaks on a gas chromatogram chart? Each sharp peak represents a separate compound The peaks represent how much time it takes for a compound to travel through the column from the time of injection to detection The size of the peak is proportional to how much material is present D. The number above each peak represents the atomic weight of the compound identified by the detector

White blood cells

Which part of the blood is the body's primary defense against infections? plasma white blood cells platelets red blood cells

IV and V

Which schedule(s) contain drugs with the low potential for abuse and recognized medical use? III and IV II and III IV and V I only

laminate

Which type of glass has a thin plastic coating on both sides? plate float laminate tempered

c. It is an anti-coagulant that prevents bacterial growth

Why is EDTA added to blood after it has been drawn? It dries the blood so it can be stored It keeps the blood at body temperature outside of the body c. It is an anti-coagulant that prevents bacterial growth It separates the red blood cells from the white ones

plants

Many drugs are extracted from Plants Animals Minerals Petroleum

deoxyribonucleic acid

DNA stands for deoxyribonucleic acid dioxideribonucleic acid decaribonucelic acid deaminoribonucleic acid

What is the boiling point of water?

100°C

an amphetamine and caffeine

At the end of the Drugs Meter video, what drug(s) did the tablet contain according to the GC/MS? GHB and starch ecstasy and aspirin THC and lidocaine an amphetamine and caffeine

True

Bleach and other household cleaners react with luminol.

double helix

DNA coils into what structure? single helix double helix triple helix quadruple helix

True

DNA is subject to degradation, just like other biological evidence. True False

must be purchased on the street

Forensic Science Simplified defines an illegal drug as all of the following except: has limited or no medical use listed on one of the five schedules within the U.S.C. Controlled Substances Act a substance that causes addiction, habituation, or a marked change in consciousness must be purchased on the street

Potential for abuse and medical value

How does the government classify drugs within the narcotics schedule? How dangerous the main chemical component of the drug is How does the government classify drugs within the narcotics schedule? How dangerous the main chemical component of the drug is Potential for abuse and medical value The street value of a drug bought from a dealer Whether the drug is prescription or over-the-counter The street value of a drug bought from a dealer Whether the drug is prescription or over-the-counter

True

IR causes the bonds between atoms to rock, shake, and bend in predictable ways which makes it possible to identify the substance being tested. True False

false

If your antisera test is positive for human hemoglobin, you can immediately match the identity of the blood to the person from which it came. True False

True

In the LMG reaction, hemoglobin acts as a catalyst. True False

False

On a microscope, light easily penetrates metal specimens. True False

d. Pigment and vehicle

Paint is a mixture of at least these two components: Water and dye Laquer and pigment Dye and oil d. Pigment and vehicle

false

Table salt and glass are anisotropic, which means they produce no color when viewed with the polarized light microscope. True False

length and tag color

The CE sorts DNA fragments by length and tag color weight and tag color sequence and tag color volume and tag color

True

The allele pair 12,12 at a single locus would be considered homozygous. True False

red

The amelogenin locus that indicates whether the DNA contributor is biologically male or female is in which channel? red blue green yellow