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اختبار المكيرو نموذج 3 الدكتورة عبير ناشر :
ال9 الاسئلة المباشرة :
1. In a Hemagglutination inhibition (HI) assay, what does a positive result indicate?
a. A sharp button of red blood cells at the bottom of the well.
b. The presence of viral DNA in the sample
c. A hary film of red blood cells with no buttun formation
d. The absence of antibodies in the patient's serum.
2. What is the approximate time required for Radial Immunodiffusion to produce visible results:
a. 1-2 hours
b. 6-12 hours
c. 24-48 hours
d. 72 hours or more.
3. At what temperature is the initial incubation of the antigen, antibody, and complement mixture performed in the CFA?
a. 25°C
b. 37°c
c. 56°C
d. 4°C
4. What is the role of electrolytes in precipitation reactions?
a. They act as catalysts to speed up the reaction.
b. They inhibit the formation of the precipitate.
c. They provide the necssary lons to facilitate the formation of the precipitate.
d. They dissolve the percipitate
forme.
5. What is the primary purpose of the Tissue Transglutaminase (ITG) test):
a. To diagnose rheumatoid arthritis
b. To measure thyroid hormone levels
c. To detect antibodies against gluten in cellar beare
d. To identify viral infections
6. What is the primary light source used in fluorescence microscopy:
a. Incandescent bulb
b. Laser
c.LED
d. Halogen lamp
7. Which of the following is required for PCR to detect RNA viruses?
a. DNA polymerase
b. Reverse transcriptase
C. RNA polymerase
D. Ligase
8. What is the purpose of gel electrophoresis in PCR analysis?
a. To amplify DNA
b. To quantify DNA
c. To separate DNA fragments
by size
d. To synthesis DNA
9. In the Ouchterlony Double Diffusion technique, what is the movement pattern of the reactants?
a. Radial movement of antigen and antibody
b. C. Circular movement of antigen and antibody
c. Linear movement of antigen and antibody
d. No movement occurs the reactans are static
