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HEMATOLOGY EXAM Questions with correct Answers
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HEMATOLOGY EXAM Questions with correct Answers
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HEMATOLOGY EXAM Questions with correctAnswers
Blood collected in EDTA undergoes which of the following changes if
kept at room temperature for 6-24 hours? Correct Answer-a. Increased
hematocrit and MCV
To remove fresh blood from a lab coat you would: Correct Answer-c.
Apply a 3% hydrogen peroxide solution then rinse thoroughly with
water
Which of the following achromatic objectives would be an oil
immersion objective: Correct Answer-c. N.A. 1.25
A blood smear from an infant was examined and it was discovered that
there were 20 nucleated erythrocytes for each 100 leukocytes counted.
The observed WBC count as 3.6 x 109/L. What is the corrected (true)
leukocyte count? Correct Answer-b. 3.00 x 109/L
The diluent used for counting platelets by the Unopette method is:
Correct Answer-c. 1% ammonium oxalate
The principle of counting the cells using anoptical cell counter is:
Correct Answer-c. based on the scattering of light by cells
,When a red blood cell count is performed on an electrical particle
counter, the counter usually Correct Answer-b. includes white blood
cells
Cells are counted on the Coulter Counter as they pass through a path
between two electrodes by creating a Correct Answer-c. voltage
decrease
You are performing a white blood cell count on a known leukemic
patient. His WBC count usually runs approximately 200 x 109/L. In
order to count approximately 40 cells in each of the four "W" squares,
which of the following combinations of pipette and dilution would you
choose? Correct Answer-d. RBC pipette, blood to 0.2
Coincidence refers to: Correct Answer-d. The simultaneous passage of
more than one cell through the aperture
The light source on optical cell counters usually is a: Correct Answer-c.
Laser beam
The reason for allowing the dilution made in a platelet unopette to sit for
10 minutes before plating is: Correct Answer-c. to lyse red blood cells
The protein that is involved in the transport of iron in the plasma is:
Correct Answer-c. transferrin
, The largest quantity of body iron is found in the form of: Correct
Answer-e. hemoglobin
In order for hemoglobin to bind properly with oxygen, the iron must
have the following valence: Correct Answer-b. +2
The globin component of hemoglobin F Correct Answer-d. is composed
of 2 alpha and 2 gamma chains
Methemoglobin contains a: Correct Answer-a. ferric form of iron
In hemoglobin S disease, there is a substitution of: Correct Answer-a.
valine for glutamic acid
What is the function of the enzyme methemoglobin reductase in a red
cell? Correct Answer-a. to keep iron in the ferrous state
Hemoglobinopathies such as HbS and C have abnormalities occurring in
their: Correct Answer-b. beta chains of globin
According to the laboratory procedure manual at General Hospital,
hematocrits are to be spun at 10,000 PRM for 4 minutes. A new
employee centrifuged the hematocrits for only 2 minutes at 5,000 RPM.
The hematocrit value may be: Correct Answer-b. falsely increased
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