WorksheetsBLOOD AND BLOODSTAIN
Total questions: 40
Worksheet time: 25mins
Both A and B antigens are found in...
type A
Type AB
Type B
Type O
Which confirmatory test is used to determine if a blood stain is human or not?
leucomalachite
Kastle-Meyer
luminol test
precipitin test
Blood cells responsible for oxygen distribution are called...
Erythrocytes/red
Leukocytes/red
Erythrocytes/white
Leukocytes/white
Type A+ blood can donate to
A-
A+
AB-
O+
Antibodies present in Type AB blood are...
A
B
AB
none
Antibodies present in Type A blood are...
A
B
AB
O
True or False:
An AB mother and OO father CANNOT have an OO child.
(Hint: work it out using a Punnett square)
True
False
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
Human cells are _____ and _____; whereas other animal cells are typically ______ and _____.
round and anucleated; oval and nucleated
oval and anucleated; round and nucleated
oval and nucleated; round and anucleated
triangular and anucleated; square and nucleated
any foreign molecule or cell in the body that triggers an immune response to produce antibodies
antigen
agglutination
secretor
red blood cells
proteins secreted by white blood cells that attach to
antigens as an immune response
antibodies
agglutination
lines of convergence
serology
secondary drops formed when some blood breaks free from the main contact drop of blood
satellite
plasma
point of origin
lines of convergence
the study of blood or other bodily fluids
serology
agglutination
erythrocyte
point of origin
elongated blood streaks radiating away from the center of a bloodstain
spine
satellite
adhesion
cohesion
smeared blood patterns created when an object moves through blood that is not completely dried
swipe
wipe
satellites
spines
blood pattern resulting from a lateral transfer from a moving source onto another surface
swipe
wipe
spine
satellite
When an object with blood on it touches one that does not have blood on it, this produces:
Contact/Transfer Patterns
Cast-off spatter
Void Patterns
Arterial spray spatter
_____ may originate from a single drop or a large amount of blood
Pool
Flows
drip trail
transfer patterns
Blood-clotting factors.
erythrocytes
leukocytes
plasma
platelets
Who discovered the ABO blood system?
Karl Marx
Karl Landsteiner
Karl Lagerfeld
Carl Wheezer
Blood type B can receive blood from which blood type(s)?
B only
AB only
A and B
B and O
Which blood type is the universal recipient?
O+
O-
AB+
AB-
If no precipitate forms in a precipitin test, what conclusion can you draw?
the liquid is blood
the liquid might be blood
the liquid is human blood
the liquid is animal blood
As the drop height increases, the diameter of blood droplets _____________.
increases
decreases
remains the same
Two basic types of blood evidence are:
phenolphthalein and dried bloodstains
liquid blood evidence and dried bloodstains
Luminol and Leucomalachite
Quentin is a crime scene investigator. He believes a violent crime may have occurred in the bedroom of an apartment but he sees no blood. Which of the following chemicals reacts with iron produces a glowing blue color if blood is present?
Luminol
Fluorescein
HemaStix
LCV
What is the function (job) of the platelets?
To form clots (i.e. scabs) when you have cuts and grazes.
To transport oxygen to the muscles
To carry dissolved sugars.
To produce antibodies
How much blood does an adult have?
5 liters
10 liters
8 liters
20 liters
What is the original drop of blood that casts or gives off a satellite called?
Parent Drop
cast off
Satellite drop
Spine
Blood evidence (untested) at a crime scene would be categorized as;
circumstantial / individual
circumstantial / class
direct / individual
direct / class
Blood evidence on an item would be stored (packaged) in;
an airtight metal container
ziplock bag
paper bag
paper envelope
What is blood made of?
oxygen and plasma
red blood cells and white blood cells
plasma, red blood cells, white blood cells, and platelets.
plasma and platelets
What can happen if you receive the wrong blood type?
It changes your blood type.
You might need new white blood cells.
Your cells will clump together and you could die.
You will get too much oxygen.
What attaches to oxygen as you breathe and carries oxygen on red blood cells?
plasma
hemoglobin
platelets
bone marrow
