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MLT ASCP Practice Questions 3.7.16 Updated With Verified Answer 100% Score!!!
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MLT ASCP Practice Questions 3.7.16 Updated2023-2024 With Verified Answer 100% Score!!!
Quiz :If the dilution is 1:100, and the average platelet count from both sides of
the hemacytometer counting chamber in 2 mm2 is 68, what is the calculated
platelet count?
A. 680,000/mm3
B. 6,800/mm3
C. 68,000/mm3
D. 680/mm3
E. 34,000/mm3 - Answer :C;
A simple way to calculate platelet counts on the hemacytometer is to multiply
the average platelet count between the two sides of the chamber by 1,000. In
this case 68 x 1,000 = 68,000 platelets. The longer derivation is as follows:
The standard dilution of blood for platelet counts is 1:100; therefore the
dilution factor is 100. The volume of diluted blood used is based on the area
and depth of the counting area. The area counted is 1 mm2 per side (since we
are using the average platelet count, we only use the area of one side) and the
depth factor is 10.
((Total number of cells counted x dilution factor x depth factor(mm)) / area in
mm2) = platelets per mm3
Quiz :Which branch of the immune system has an immediate response on first
exposure to a foreign antigenic stimulus?
A. Cell Mediated
B. Specific
C. Humoral
D. Innate - Answer :D;
The innate immunity system is inherent and nonspecific; meaning that all
pathogens are attacked similarly. The skin, mucus in respiratory tracts, acid pH,
and others are all examples of the innate immunity system that the body has
to prevent infection upon first exposure.
Quiz :A two-year old male patient has the following hemogram results:
Hgb = 6.7gms/dl
Hct = 20%
Platelets = 355,000/ mm3
,RBC = 3.0mil/cmm
WBC = 8750/cmm
Differential = 6 eos 20 segs 68 lymphs 6 monos
Which of the following is the MOST likely diagnosis?
A. Dietary iron deficiency
B. Idiopathic thrombocytopenia
C. Lymphocytic leukemia
D. Thalassemia minor
E. Lead poisoning - Answer :A;
We can rule out answer Idiopathic thrombocytopenia since the platelet count
is normal. We can also exclude lymphocytic leukemia because the WBC is
normal. Thalassemia minor can be excluded because thalassemia patients
usually have only mild anemia. Finally, lead poisoning cannot be the answer
since this condition does not usually cause severe anemia. The RBC, Hct, and
Hgb are all very low, and this fits the picture of iron deficiency anemia.
Quiz :The purpose of C3a, C4a, C5a, the split-products of the complement
cascade, is to:
The correct answer is highlighted below
bind with specific membrane receptors of lymphocytes and cause release of
cytotoxic substances.
cause increased vascular permeability, contraction of smooth muscle, and
release of histamine from basophils.
bind with membrane receptors of macrophages to facilitate phagocytosis and
the removal of debris and foreign substances.
regulate and degrade membrane cofactor protein after activation by C3
convertase. - Answer :B;
The purpose of C3a, C4a, C5a, the split-products, of the complement cascade is
to cause increased vascular permeability, contraction of smooth muscle, and
release of histamine from basophils. C3a, C4a and C5a, bioactive fragments of
the complement components C3, C4 and C5, respectively play a key role in
mediation of immunologically provoked inflammatory responses. C4a
production results from classical pathway activation while, C3a and C5a are
produced by the activation of the classical pathway and/or the alternative
pathway.
,Quiz :The protein component that surrounds the genome is called a:
A. Capsid
B. Spike
C. Co-receptor
D. Syncytia - Answer :A;
The protein component that surrounds the genome is called a capsid.
Quiz :(True/False)
A centromere that is located at the point where two chromosome arms are
roughly EQUAL in length is called metacentric. - Answer :True;
Metacentric centromeres are said to be near the middle of the chromosome so
that the two arms are approximately equal in length.
When the centromere is located where the two arms are not equal in length, it
is submetacentric. When the centromere is located close to one end of the
chromosome arm, it is acrocentric.
Quiz :Match the viruses below with their associated diseases.
1. Epstein-Barr
2. Varicella-Zoster
3. Rhabdovirus
4. Picornavirus
A. Chicken pox
B. Rabies
C. Infectious mononucleosis
D. Polio - Answer :1. C
2. A
3. B
4. D
Quiz :Which of the following is true of the classic Bombay phenotype?
The correct answer is highlighted below
Two hh genes are inherited at the H locus
H substance is present
A antigen is present
B antigen is present - Answer :A;
, In the classic Bombay phenotype, two hh genes are inherited at the H locus
and there is no H antigen produced. Without H antigen, there is no way for
additional sugar attachment to take place. Additional sugar attachment is
necessary for the development of A and B antigens. Therefore, without H
antigen, there is no development of A and B antigens.
Quiz :The India ink preparation is used as a presumptive test for the presence
of which organism?
A. Aspergillus niger in blood
B. Cryptococcus neoformans in CSF
C. Histoplasma capsulatum in CSF
D. Candida albicans in blood or body fluids
E. Trichomonas vaginalis in vaginal secretions - Answer :B;
The India ink preparation is used as a presumptive test for the presence of
Cryptococcus neoformans. Upon staining with India Ink, C. neoformans shows
distinct, wide capsules surrounding the yeast cells. C. neoformans affects
predominantly immunocompromised hosts and is the commonest cause of
fungal meningitis; worldwide. In addition, 7-10% of patients with AIDS are
affected.
Quiz :Classification of acute leukemia in the United States relies on two main
systems, the FAB (French American British) and the WHO (World Health
Organization) classifications. In order to diagnose acute leukemia, the FAB
system requires ______% of non-erythroid blasts to be present in the bone
marrow/peripheral blood, while the WHO system requires the presence of
________% non-erythroid blasts.
A. 40%, 20%
B. 30%, 20%
C. 20%, 30%
D. 20%, 40% - Answer :C;
In order to diagnose acute leukemia, the FAB system requires 30% of non-
erythroid blasts to be present in the bone marrow/peripheral blood, while the
WHO system requires the presence of 20% non-erythroid blasts.
Quiz :At medical examination, a 50-year-old Caucasian male expressed
concern regarding diabetes. There is a history of type 2 diabetes, hypertension,
and cardiovascular disease in his family. He has gained a few pounds each year
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