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WorksheetsForensics Unit 7 - Blood Evidence
Total questions: 45
Worksheet time: 29mins
Name the proteins on the surface of red blood cells.
Antibodies
Antigens
Plasma
Collagen
What type of antigens can be found on the surface of RBC's when someone has blood type O?
A
B
AB
none
What type of antigens can be found on the surface of RBC's when someone has blood type AB?
A
B
AB
none
Where are antibodies located?
surface of red blood cells
surface of white blood cells
plasma
surface of platelets
What antibodies can be found in the plasma when someone has blood type A?
none
A
B
A and B
If your blood type is Rh + (such as A+) then you have _____ on your red blood cells.
antibodies
Rh antigens
no Rh antigens
multiple alleles
What blood type is this?
A+
B+
AB+
AB-
What ANTIBODIES would this person produce in his/her plasma?
A
B
A and B
no antibodies
Fight bacteria and viruses by entering infected tissue, destroying bacteria/viruses and absorb dead blood cells
White Blood Cells
Red Blood Cells
Platelets
Plasma
What is the most common blood type in the U.S.?
A
B
AB
O
What is the rarest blood type in the U.S.?
A
B
AB
O
If a red blood cell has no antigens on its surface, what is its blood type?
A
B
AB
O
The part of the blood that fights off infection.
white blood cells
red blood cells
platelets
plasma
Which of the following images best represents a TRANSFER bloodstain pattern?
Which confirmatory test is used to determine if a blood stain is human or not?
leucomalachite
Kastle-Meyer
luminol test
precipitin test
Type A+ blood can donate to
A-
A+
AB-
O+
A person with Type AB+ blood can receive blood from....(check all that apply)
A+
AB-
O+
B-
Which of the following angles best represents a circular blood drop?
90 degrees
15 degrees
30 degrees
120 degrees
Which presumptive test determines if a stain is blood by adding phenolphthalein and hydrogen peroxide and turns pink when positive?
luminol
leucomalachite
kastle-meyer
Blood type is what type of forensic evidence?
class
individual
A protein in the blood that destroys or inactivates a specific antigen is called..
Erythrocytes
Antibody
Antigen
Enzyme
Which direction was this blood drop traveling?
south to north
east to west
west to east
north to south
This type of presumptive testing for blood uses a light that turns the blood bright blue.
Luminol
LCV
Leucocrystal Violet
Kastle-Meyer
As blood drops from increasing heights, what happens to the size of the blood stain?
Gets larger.
Gets smaller.
Stays the same size.
The arrow is pointing to a
satellite
spine
parent drop
What type of bloodstain pattern is this?
Passive
Projected
Transfer or Contact
Swipe/Wipe
Projected
Blood pumping from a severed artery would leave
Passive blood spatter
Projected blood spatter
Transfer blood spatter
Blood dripping off a weapon would be considered
Passive blood spatter
Projected blood spatter
Transfer blood
a 3D view formed using line of convergence and angles of impact of at least two different drops of blood to identify the source and location of blood splatter.
lines of convergence
point of origin
red blood cells
antibodies
secondary drop formed when some blood breaks free from the main contact drop of blood
white blood cells
red blood cells
satellite drop of blood
cell surface protein
What type of blood spatter is typically created from a gunshot?
medium velocity impact spatter
high velocity impact spatter
cast off
void
The following drops can tell you:
direction of travel
weapon used
age of drop
source of blood
What pattern of blood spatter is this?
cast off
back spatter
passive drip
arterial spurt
The lines in the picture are referred to as lines of ___.
convergence
intersection
location
tangent
What would cause medium velocity blood spatter?
baseball bat
human hand
grenade
gunshot
What type of blood-spatter creates the smallest blood drops?
low velocity impact spatter
medium velocity impact spatter
high velocity impact spatter
