CLS FINAL EXAM LATEST 2024 ACTUAL EXAM 180 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+

Which of the following is true regarding the preparation and
staining of a blood smear?
a) smears must be stained immediately
b) smears can be immersed in methanol and stained later
c) smears can be preserved by immersing in ethanol
d) Wright's stain contains no preservative - ...ANSWER...b
All of the following are formed elements found in normal
blood EXCEPT:
a) RBCs (erythrocytes)
b) WBCs (leukocytes)
c) megakaryocytes
d) platelets - ...ANSWER...c
Which of the following cellular features are examined to
identify a cell?
a) relative cell size
b) nuclear characteristics
c) cytoplasmic characteristics
d) all of the above - ...ANSWER...d
Which of the following is true regarding identification of
WBCs?
a) the size can be estimated by comparing them to epithelial
cells
b) abnormal cells are easy to identify
c) most normal WBCs can be easily identified
d) the shape of the nuclei is not considered - ...ANSWER...c
Which of the following is true of RBCs?
a) they are biconcave disks
b) in the peripheral blood, they have a nucleus
c) they are about 2-3 um in diameter
d) mature cells take up the basophilic stain - ...ANSWER...a
All of the following are true of RBCs EXCEPT:
a) their color is due to hemoglobin
b) normal mature RBCs stain pink-tan
c) the central area stains darker than the edge
d) their diameter is 6-8 micrometers - ...ANSWER...c
Which of the following is not a reference range for
differential count on an adult?
a) 25%-40% lymphocytes
b) 3%-9% neutrophils
c) 0%-7% bands
d) 1%-3% eosinophils - ...ANSWER...b
In the WBC differential count:
a) an average of 7-20 platelets/oil immersion field is
considered normal
b) a 1 month old infant will have 45%-50% neutrophils
c) 45%-50% neutrophils is normal for an adult
d) 7%-13% bands is normal for an adult - ...ANSWER...a
Which of the following statements about the WBC
differential count is not correct?
a) viral infections usually cause increased lymphocytes and
increased total WBCs
b) neutrophils and bands can be inreased in bacterial
infections
c) infectious mono causes increased total WBCs -
...ANSWER...a
Which of the following is true?
a) lymphocytes often have vacuoles in their cytoplasm
b) lymphocytes are derived from a common perfursor called
the promyelocyte
c) lymphocytes are produced in the bond marrow and other
lymphoid tissue
d) monocytes are involved in the immune response by
producing antibodies - ...ANSWER...c
Which of the following is not correct concerning the normal
WBC differential count?
a) neutrophils and lymphocytes compromise 85%-95% of
cells
b) eosinophils make up 3%-9% of the cells
c) monocytes, eosinophils, and basophils make up 5%-15%
of the cells
d) blood from a 1 month old infant can have 40%-70%
lymphocytes - ...ANSWER...b