The most common type of protein found in the cell membrane is:
The enzyme deficiency in the Embden-Meyerhof pathway that is responsible for most cases of nonspherocytic hemolytic anemia is:
Which of the following would correlate with an elevated ESR value?
The most important practice in preventing the spread of disease is:
Answer: Proper handwashing
Iron is incorporated into the heme molecule in which of the following forms:
The most frequent cause of needle punctures is:
Answer: Improper disposal of phlebotomy equipment
What is the distribution of normal Hb in adults?
Answer: >95% Hb A, <3.5 % Hb A2, <1-2% Hb F
The maximum number of erythrocytes generated by one Multipotential Stem Cell is:
How are the globin chains genes arranged? Note: a means alpha, B means beta
Answer: With a genes and B genes on seperate chromosomes, two a genes on one chromosome and one B gene on a different chromosome
Which of the following gathers, organizes, and directs light through the specimen?
In the bone marrow, RBC precursors are located:
Answer: Surrounding macrophages near the sinus membrane
During midfetal life, the primary source of blood cells is the:
The layer of the erythrocyte membrane that is largely responsible for the shape, structure, and deformability of the cell is the:
Answer: Peripheral protein
The acceptable range for hemoglobin values on a control sample is 13 + or - 0.4 g/dL. A hemoglobin determination is performed five times in succession on the same control sample. The results are (in g/dL. 12 12.3, 12, 12.2, and 12.1) These results are:
Answer: Precise, but not accurate
Which of the following cells may develop in sites other than the bone marrow?
A multilineage cytokine among the ILs is:
In the Iron cycle, the transferrin receptor carries:
Answer: transferrin-bound iron into erythrocytes
Which single feature of normal RBC's is most responsible for limiting their life span?
The hexose monophosphate pathway activity increases the RBC source of
Answer: NADPH and reduced glutathione
The lipids of the RBC membrane are arranged:
Answer: In two layers that are not symmetric in composition