Chapter 1. Red Blood Cells and Platelet Preservation: Historical Perspectives and Current
Trends
Multiple Choice
Identify the choice that best
... [Show More] completes the statement or answers the question.
____ 1. Which metabolic pathway is responsible for generating 90% of the ATP for the RBC?
a. Pentose phosphate shunt c. Glycolysis
b. Luebering-Rapoport shunt d. Methemoglobin reductase
____ 2. A unit of blood was returned to the blood bank before it was spiked. Apparently the patient’s IV failed. The
unit of blood was outside the blood bank for 35 minutes. Which of the statements below is most accurate?
a. The unit of blood should be discarded immediately.
b. The unit of blood can be returned to inventory.
c. The unit of blood must be transfused within 4 hours or be discarded at the end of that time.
d. The unit of blood must be transfused with 24 hours.
____ 3. What effect does storage have on platelets?
a. Shrinking c. Repulsion
b. Lysis d. All of these.
____ 4. In the normal hemoglobin-oxygen dissociation curve, what percentage of oxygen is released to the tissues
when PO2 averages 40 mm Hg?
a. 75% c. 100%
b. 25% d. 50%
____ 5. What factors are known to influence platelet metabolism and function?
a. Storage temperature c. Platelet count
b. Initial pH d. All of the above
____ 6. Which of the following red blood cell morphologies may be present on the peripheral blood smear as a result
of loss of RBC membrane?
a. Spherocytes c. Burr cells
b. Target cells d. Schistocytes
____ 7. What does the term autologous transfusion refer to?
a. A parent donating blood for his or her child
b. An individual donating blood for a friend
c. An individual donating blood for a relative
d. An individual donating blood for his or her own transfusion
____ 8. What is the primary function of hemoglobin?
a. Iron metabolism c. Oxygen transport
b. Porphyrin synthesis d. Signal transduction
____ 9. All of the following areas of red blood cell biology are crucial for normal erythrocyte survival except:
a. cellular metabolism. c. site of the ABO antigen attachment.
b. RBC membrane. d. hemoglobin structure.
____ 10. What is the correct biochemical composition of the RBC membrane?
a. 52% protein, 40% lipid, 8% carbohydrate
b. 40% protein, 8% lipid, 52% carbohydrate [Show Less]