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WorksheetsBlood Testing Quiz Review
Total questions: 24
Worksheet time: 17mins
Which presumptive test would investigators use at a crime scene to determine if a sample is blood?
Microscopy
Precipitin
Blood Typing
Hemastix
The Kastle-Meyers Test is showing a ______________ result for blood.
Positive
Negative
Luminol may give a false positive if the scene is cleaned with:
Dish Soap
Bleach
Laundry Detergent
Glass Cleaner
Which test cannot differentiate between human and animal blood?
Microscopy
Hemastix
Precipitin
What is the person's blood type?
B-
B+
A-
A+
You tested the sink at a crime scene with Hemastix. The following result was produced. What should you tell your commanding officer?
The sink tested negative for blood.
The sink tested inconclusive for blood.
The sink tested positive for blood.
The sink tested positive for animal blood.
The following picture shows a process known as:
Blood typing
Plasmolysis
Classification
Agglutination
Using the table, determine the probability for O- blood.
38.25%
22.45%
6.75%
1.23%
Using the table, determine the probability of having AB and N blood types.
2.5%
12.5%
16.54%
22.42%
Using the table, determine the probability of having blood type A and Rh factor Le (a+b-).
24.4%
12.34%
10.1%
8.8%
If a person has type A- blood, then they have _____.
Only the B antigen
Both the A and the Rh antigen
Only the A antigen
Only the Rh antigen
Which of the following is NOT true about blood typing?
Blood typing is faster and less expensive than DNA testing.
Blood typing is a source of individual evidence.
Blood typing can eliminate suspects.
Blood typing can be used in forensics as well as in determining parentage.
Which of the following is NOT a presumptive blood test that investigators might use to identify blood at a crime scene?
Kastle-Meyer
Luminol
Hemastix
Blood Typing Test
A thief breaks a house window and steals a wallet. You test a sample of blood left behind by the thief and it is O-. How can you confirm it is O-?
You observe clotting in the A & B wells
You observe clotting in the Rh well
You observe clotting in all three wells
You observe clotting in none of the wells
Which antigens are present on the red blood cells of a person with type B+ blood?
A antigen
B antigen
Rh antigen
Which antibodies exist in the blood plasma of a person with type B+ blood?
A antibodies
B antibodies
Rh antibodies
Which blood type has only Rh antigens on the surface of red blood cells?
A+
AB+
B+
B-
O+
Which blood type would have only anti-B antibodies in the blood plasma?
A
B
AB
O
The liquid part of the blood carries water, proteins, waste, and other nutrients. What is it called?
Antibody
Antigen
Plasma
Platelets
Luminol is a chemical used to...
Illuminate or glow if blood is present
Detect if the blood is from a human or not
Determine the blood type of an individual
Perform a White Blood Cell count
This part of the blood helps in clotting to prevent major blood loss when a person is cut.
Plasma
Platelets
Antigens
Antibodies
Proteins on the surface of Red Blood Cells determine the blood type of an individual.
Plasma
Platelets
Antigens
Antibodies
Which of the following is NOT a conclusive test for blood?
Precipitin
Microscopy
Blood Typing
Kastle-Meyer
A downside to many presumptive field tests is that:
There are sometimes false positives.
They are time-consuming.
They require large and specialized equipment.
They are extremely costly.
