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science test Flashcards

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Biology 101 flashcards
1
Q

What does BPA stand for

A

Bloodstain pattern analysis

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2
Q

What can an investigaotr learn from a blood spatter?

A 
type of velocity and weapon
number of blows
left or right handed
position of movement of victim or assailant
which wounds were created first
type of injuries
how long ago the crime was committed
whether death was immediate or delayed
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3
Q

Conclusion about blood spatter

A

the greater the heigh the bigger the diameter

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4
Q

SPatter

A

a bloodstain created by the application of force to the area of which the blood originated

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5
Q

Origin

A

the place where the blood spatter came from

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6
Q

angle of impact

A

the angle which a blood droplet strikes a surface

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7
Q

parent drop

A

the blood droplet where the satellite spatter originates from

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8
Q

satellite spatters:

A

not attached to the parent drop, small drops of blood that breakaway from the parent spatter when the blood droplet hits the surface

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9
Q

spines

A

attached to the parent drop, the pointed edges of a stain that radiates out from a spatter

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10
Q

Passive blood stains

A

patterns that are created by gravity

drops, series of drops or pools of blood

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11
Q

projected bloodstains:

A

patterns that occur when a force is applied to the source of the blood

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12
Q

transfered or contact blood stains:

A

these are created when a wet bloody object comes into contact wiht a target surface

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13
Q

Two things chormaotgraphy is used for

A

blood and ink analysis

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14
Q

RF

A

relative mobility factor

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15
Q

DNA Profiling

A

gelelectrophoresis

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16
Q

what is forensic analysisty= used for

A 
blood
skin
hair
smeen
bodily fluids
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17
Q

5 classes of controlled substances

A 
narcotics
depressant
steriosd
hallucigen
stimulant
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18
Q

what is lochards exchange princliple and example

A

every contact leaves a trace example hair falling out or touching something

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19
Q

satellite spatters

A

small drops of blood that brak off when the paretn drop hits the sirface

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20
Q

spatter

A

the parent drop where the sattelite spatter originates

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21
Q

spines

A

radiate out from the spatter

22
Q

Latenet finger print

A

fingerprints that deposit oil and sweat from pores on friction ridges

23
Q

protocol for fingerprint printing

A

dust
remove excess dust
tape on print
put on card

24
Q

Ridge charachterisitcs

A

LOOP WHOLR AND ARCH

25
Q

what are the main bloood groups

A

a
b
ab
o

26
Q

what are the compontes of blood

A

Plasma
white blood cells
red blood cells
platelets

27
Q

what detrermines your blood group

A

genes

28
Q

Hair structure

A 
Cuticle
Cortez
Medulla 
Cortex
Cuticle
29
Q

What do forensic anthropologists specialise in?

A

In the changes and variation of human remains

30
Q

Crime scene definition

A

Any physical location in which a crime has occurred or is suspected of having occurred

31
Q

Primary crime scene definition

A

The original location of a crime or accident

32
Q

Secondary crime scene definition

A

An alternate location where additional evidence my be found

33
Q

Suspect

A

Person though to be capable of committing a crime scene

34
Q

Accomplice

A

A second person associated with the crime

35
Q

Alibi

A

Statement of where a suspect was at the time of the crime

36
Q

Testimonial evidence

A

Testimonial evidence would be any witnesses accounts of an incident or crime

37
Q

Physical evidence

A

Physical evidence would refer to any material Items that are present at the crime scene or the victims

38
Q

Trace evidence

A

Trace evidence refers to evidence that is found at the crime at a crime scene in small but measurable amounts

39
Q

Red blood cells

A

Carry oxygen to our cells

40
Q

White blood cells

A

Destroy pathogens

41
Q

Plasma

A

Clotting agent and provides nutrients

42
Q

Platelets

A

Clotting agent

43
Q

Bloood transfusions

A

Rh + only gives +-

But Rh- can only give -

44
Q

How is blood detected at a crime scene

A

Uv light
Luminal
Presumptive testing

45
Q

Crime scene protocol

A

Interview
Examine
Documents
Pro esss

46
Q

What does evidences tell us

A

Pieces that they connoted a crime

Gives detectives with leads

Links suspect with crime

47
Q

Police officers

A

Arrive first, secure crime scene

48
Q

Csi unit

A

Documents scene in detail

49
Q

District attorneys

A

Warrants

50
Q

Detectives

A

Interview witnesses

Science (5 decks)

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