Blood Quiz
Questions: 16 · 10 minutes
1. During blood typing, antibodies cause red blood cells carrying the matching antigen to visibly clump. What is this reaction called?
Coagulation
Hemolysis
Agglutination
Osmosis
2. An anticoagulated blood sample is centrifuged. What is found mainly in the thin buffy coat between the plasma and red blood cells?
White blood cells and platelets
Hemoglobin and albumin
Red blood cells and fibrin
Plasma water and electrolytes
3. Which ABO plasma type typically contains neither anti-A nor anti-B antibodies?
Type O plasma
Type AB plasma
Type B plasma
Type A plasma
4. Which method can reliably determine a person's actual ABO and Rh blood type?
Inferring it from one parent's reported blood type
Reading the values on a routine complete blood count
Matching personality traits to blood-type descriptions
Testing red blood cells with appropriate typing reagents
5. After a small blood vessel is damaged, which formed element most directly gathers at the site to help create an initial plug?
Red blood cells
Lymphocytes
Neutrophils
Platelets
6. Which molecule inside red blood cells binds and carries most of the oxygen transported by blood?
Fibrinogen
Hemoglobin
Albumin
Immunoglobulin
7. In the ABO system, which combination is typical of type A blood?
A antigens on red blood cells and anti-B antibodies in plasma
B antigens on red blood cells and anti-B antibodies in plasma
A and B antigens on red blood cells and anti-A antibodies in plasma
No A or B antigens on red blood cells and no ABO antibodies in plasma
8. In a healthy adult, where are most new blood cells produced?
The spleen
The kidneys
The liver
Red bone marrow
9. What does Rh-positive usually mean in routine blood typing?
Both A and B antigens are absent
The D antigen is present on the red blood cells
Anti-D antibodies are naturally present in everyone’s plasma
The blood contains more red cells than Rh-negative blood
10. Testing finds neither A nor B antigens on a person's red blood cells. What is the person's ABO type?
AB
A
O
B
11. Why can an ABO-incompatible red blood cell transfusion cause a dangerous reaction?
Recipient antibodies can bind to antigens on the donor red blood cells
Donor red cells remove all clotting proteins from the recipient
Donor plasma permanently changes the recipient's inherited blood type
Recipient platelets immediately stop carrying oxygen
12. A laboratory needs the cell-free liquid portion of anticoagulated blood while retaining clotting proteins. Which portion should it collect?
Serum
The buffy coat
Packed red blood cells
Plasma
13. Pathogens enter through a cut. Which formed element has the most direct role in recognizing and responding to the infection?
Red blood cells
White blood cells
Platelets
Reticulocytes
14. A website claims it can verify a person's blood type from personality traits alone. Which conclusion best reflects current scientific understanding?
Personality traits cannot reliably determine or verify blood type
Only certain temperament traits can reveal blood type reliably
Personality accurately identifies ABO type but not Rh status
A strong personality match is equivalent to laboratory typing
15. Which list consists only of the formed elements of blood?
Water, plasma proteins, and platelets
Plasma, red blood cells, and antibodies
Red blood cells, white blood cells, and platelets
Serum, white blood cells, and hemoglobin
16. A person has far fewer red blood cells than expected. Which blood function is most directly affected?
Forming the initial platelet plug
Producing antibodies against pathogens
Transporting oxygen to body tissues
Dissolving nutrients in the liquid portion of blood