FORENSICS-SEROLOGY TEST EXAM-ACTUAL EXAM |LATEST UPDATE 2025
COMPLETE QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS|
MOSTLY TESTED QUESTIONS –RATED 100% CORRECT!! GUARANTEED
PASS!!ALREADY GRADED A+
What does a blood drop look like at 30°? - (answers)It has a long tail
What does a blood drop look like at 60°? - (answers)The bottom of the stain is slightly not round,
but doesn't have a tail.
What does a blood drop look like at 90°? - (answers)It is a perfectly round droplet with no tail
What does a blood drop look like at 120°? - (answers)forms a bloodstain that is elongated and
elliptical, with a more pronounced tail or spines extending in the direction of trave
What is the lines of convergence? - (answers)These are lines that are draw in the direction the
blood came from to find out where they meet to find where the source was standing.
Kastle-Meyer test - (answers)a chemical test to determine if a stain is blood, it turns a magenta
color if it is a blood stain
The parent droplet - (answers)The original drop of blood
Transfer stain - (answers)A bloodstain resulting from contact between a blood-bearing surface
and another surface.
Wipe blood stain - (answers)A non-bloody object that moves through a bloody one
Swipe blood stain - (answers)A bloody object that moves of a non-bloody surface
Saturation stain - (answers)A bloodstain resulting from the accumulation of liquid blood in an
absorbent material.
What happens to the tail of the blood drop as the angle of impact gets smaller? - (answers)The
tail gets longer
What happens to the size of the blood drop as the height from which it was dropped increases? -
(answers)The size of the blood drop increases
In what fluid does Luminol glow in? - (answers)organ fluids
,Satellites in blood drops - (answers)smaller blood droplets that broke away from the parent
droplet
Projected blood splatter - (answers)blood pumped from a severed artery
Passive blood splatter - (answers)blood dripping off the weapon
Cast-off pattern - (answers)a bloodstain pattern created when blood is released or thrown from a
moving blood-bearing object
Angle of Impact - (answers)the angle at which a blood droplet strikes a surface
Void (blood stain) - (answers)when a person or object blocks the path of the blood.
What velocity is a blood splatter if caused by a gunshot? - (answers)high velocity
What velocity creates larger dropplets? - (answers)low velocity
What size droplets for high velocity impacts leave? - (answers)smaller droplets
How can you tell which way the droplets was traveling? - (answers)the droplets go in the
direction of the tail
Blood type that contains A antigens - (answers)A
Blood type that does not contain A or B antigens - (answers)O
Blood type that contains both A and B antigens - (answers)AB
Blood type that contains B antigens - (answers)B
What type of evidence are red blood cells? - (answers)class
What type of evidence are white blood cells? - (answers)individual
Describe the Luminol Test? - (answers)Has a reaction with blood that causes a luminescence
What is the source of the antibodies when using the Precipitin Test? - (answers)rabbits
When neither anti-A, anti-Rh nor anti-B blots on a blood plate, the blood type is _____ -
(answers)O -
, Serology - (answers)study of antigen-antibody reactions
Determines Human or animal origin. Antibody that reacts with its corresponding antigen to form
a precipitate - (answers)Precipitin Test
Recessive Blood Type - (answers)O
Dominate Blood Type - (answers)A & B
Components of blood - (answers)plasma, RBC, WBC, platelets
Average adult has how many liters of blood in body: 5
Blood makes up __ of someones body weight: 7-8%
Blood carries __ and __ to all parts of the body: oxygen and nutrients 4. carries ________ and
other waste products back to the lungs, kidneys, and liver for disposal: carbon dioxide
Blood fights against __ and helps ___ ___: fights against infection and helps heal wounds
how many blood cells are in two to three drops of blood: one billion
For every 600 red blood cells, there are about ____ platelets and ___ white cell.: 40
one
Erythrocytes: red blood cells
Leukocytes: white blood cells
RED BLOOD CELLS: The most abundant cells in our blood they are produced in the bone
marrow and
contain a protein called hemoglobin that carries oxygen to our cells.
WHITE BLOOD CELLS: part of the immune system
destroy infectious agents called pathogens
plasma is a what color liquid: yellowish liquid
Plasma is a portion of your what: blood
PLATELETS (Thrombocytes): The clotting factors that are carried in the plas-
ma
they clot together in a process called coagulation to seal a wound and prevent a loss of blood.
term used to describe a broad range of laboratory tests using reactions of blood serum and body
fluid: Serology
The serology section of a forensic laboratory may deal with any or all of the following:: • blood
typing • characterization of unknown blood • stain patterns for crime reconstruction • paternity
testing
• semen identification in rape cases • DNA techniques used for identification
17. 2 main questions that must be
answered by the forensic investigator:: 1. is it blood
2. whos blood is it 18. 1) Is it blood?
what tests: Benzidine Test
Kastle-Meyer Test
Luminol Test
COMPLETE QUESTIONS WITH CORRECT DETAILED AND VERIFIED ANSWERS|
MOSTLY TESTED QUESTIONS –RATED 100% CORRECT!! GUARANTEED
PASS!!ALREADY GRADED A+
What does a blood drop look like at 30°? - (answers)It has a long tail
What does a blood drop look like at 60°? - (answers)The bottom of the stain is slightly not round,
but doesn't have a tail.
What does a blood drop look like at 90°? - (answers)It is a perfectly round droplet with no tail
What does a blood drop look like at 120°? - (answers)forms a bloodstain that is elongated and
elliptical, with a more pronounced tail or spines extending in the direction of trave
What is the lines of convergence? - (answers)These are lines that are draw in the direction the
blood came from to find out where they meet to find where the source was standing.
Kastle-Meyer test - (answers)a chemical test to determine if a stain is blood, it turns a magenta
color if it is a blood stain
The parent droplet - (answers)The original drop of blood
Transfer stain - (answers)A bloodstain resulting from contact between a blood-bearing surface
and another surface.
Wipe blood stain - (answers)A non-bloody object that moves through a bloody one
Swipe blood stain - (answers)A bloody object that moves of a non-bloody surface
Saturation stain - (answers)A bloodstain resulting from the accumulation of liquid blood in an
absorbent material.
What happens to the tail of the blood drop as the angle of impact gets smaller? - (answers)The
tail gets longer
What happens to the size of the blood drop as the height from which it was dropped increases? -
(answers)The size of the blood drop increases
In what fluid does Luminol glow in? - (answers)organ fluids
,Satellites in blood drops - (answers)smaller blood droplets that broke away from the parent
droplet
Projected blood splatter - (answers)blood pumped from a severed artery
Passive blood splatter - (answers)blood dripping off the weapon
Cast-off pattern - (answers)a bloodstain pattern created when blood is released or thrown from a
moving blood-bearing object
Angle of Impact - (answers)the angle at which a blood droplet strikes a surface
Void (blood stain) - (answers)when a person or object blocks the path of the blood.
What velocity is a blood splatter if caused by a gunshot? - (answers)high velocity
What velocity creates larger dropplets? - (answers)low velocity
What size droplets for high velocity impacts leave? - (answers)smaller droplets
How can you tell which way the droplets was traveling? - (answers)the droplets go in the
direction of the tail
Blood type that contains A antigens - (answers)A
Blood type that does not contain A or B antigens - (answers)O
Blood type that contains both A and B antigens - (answers)AB
Blood type that contains B antigens - (answers)B
What type of evidence are red blood cells? - (answers)class
What type of evidence are white blood cells? - (answers)individual
Describe the Luminol Test? - (answers)Has a reaction with blood that causes a luminescence
What is the source of the antibodies when using the Precipitin Test? - (answers)rabbits
When neither anti-A, anti-Rh nor anti-B blots on a blood plate, the blood type is _____ -
(answers)O -
, Serology - (answers)study of antigen-antibody reactions
Determines Human or animal origin. Antibody that reacts with its corresponding antigen to form
a precipitate - (answers)Precipitin Test
Recessive Blood Type - (answers)O
Dominate Blood Type - (answers)A & B
Components of blood - (answers)plasma, RBC, WBC, platelets
Average adult has how many liters of blood in body: 5
Blood makes up __ of someones body weight: 7-8%
Blood carries __ and __ to all parts of the body: oxygen and nutrients 4. carries ________ and
other waste products back to the lungs, kidneys, and liver for disposal: carbon dioxide
Blood fights against __ and helps ___ ___: fights against infection and helps heal wounds
how many blood cells are in two to three drops of blood: one billion
For every 600 red blood cells, there are about ____ platelets and ___ white cell.: 40
one
Erythrocytes: red blood cells
Leukocytes: white blood cells
RED BLOOD CELLS: The most abundant cells in our blood they are produced in the bone
marrow and
contain a protein called hemoglobin that carries oxygen to our cells.
WHITE BLOOD CELLS: part of the immune system
destroy infectious agents called pathogens
plasma is a what color liquid: yellowish liquid
Plasma is a portion of your what: blood
PLATELETS (Thrombocytes): The clotting factors that are carried in the plas-
ma
they clot together in a process called coagulation to seal a wound and prevent a loss of blood.
term used to describe a broad range of laboratory tests using reactions of blood serum and body
fluid: Serology
The serology section of a forensic laboratory may deal with any or all of the following:: • blood
typing • characterization of unknown blood • stain patterns for crime reconstruction • paternity
testing
• semen identification in rape cases • DNA techniques used for identification
17. 2 main questions that must be
answered by the forensic investigator:: 1. is it blood
2. whos blood is it 18. 1) Is it blood?
what tests: Benzidine Test
Kastle-Meyer Test
Luminol Test
