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**Blood Smear Preparation and Staining:** 7. **What does agglutination with anti-D serum 1. **Which of the following stains is commonly used for blood smears?** indicate?** * a) Methylene blue * a) The person...

**Blood Smear Preparation and Staining:** 7. **What does agglutination with anti-D serum 1. **Which of the following stains is commonly used for blood smears?** indicate?** * a) Methylene blue * a) The person is blood type A * b) Crystal violet * b) The person is blood type B * c) Wright stain * c) The person is Rh positive * d) Safranin * d) The person is Rh negative * **Answer: c)** * **Answer: c)** 2. **What is the primary purpose of using immersion oil in microscopy? What is the purpose of the warming box in the staining process? ** a) To dry the slides quickly * a) To increase magnification b) To fix the blood cells to the slide * b) To improve resolution c) To enhance the staining reaction * c) To stain the specimen d) To prevent bacterial contamination * d) To adjust the light intensity Answer: c) * **Answer: b)** What is the purpose of a coverslip? a) To stain the blood 3. **What is the purpose of alcohol preps when taking a blood sample? b) To protect the microscope objective and the smear * a) To stop bleeding c) To dry the slide * b) To disinfect the puncture site d) To collect the blood sample * c) To stain the blood Answer: b) * d) To prevent clotting What type of microscope is used to examine blood smears? * **Answer: b)** a) Electron microscope b) Dissecting microscope 4. **What is the best way to dispose of used lancets?** c) Compound light microscope * a) In regular trash d) Fluorescence microscope * b) In a sharps container Answer: c) * c) Down the sink ABO-Rh Blood Typing: * d) In a biohazard bag What do anti-A and anti-B sera contain? * **Answer: b)** a) Red blood cells b) Platelets **ABO-Rh Blood Typing:** c) Antibodies.5. **Which reagents are used for ABO blood typing?** d) Antigens * a) Anti-A and anti-D sera Answer: c) * b) Anti-B and anti-D sera If a blood sample does not agglutinate with any of the anti-A, anti-B, or anti-D * c) Anti-A and anti-B sera sera, what is the blood type? * d) Anti-A, anti-B, and anti-D sera a) A- * **Answer: c)** b) B- c) O- 6. **If a blood sample agglutinates with both anti-A and anti-B sera, d) AB- what is the blood type?** Answer: c) * a) A What does the "Rh" in ABO-Rh blood typing refer to? * b) B a) A type of white blood cell * c) AB b) A type of antibody * d) O c) The Rhesus factor (D antigen) * **Answer: c)** d) A type of sugar on the red blood cell surface What are "Hype-Wipes" used for in a laboratory setting involving blood? a) Cleaning microscope slides b) Disinfecting surfaces and cleaning spills, especially blood spills c) Wiping lancets d) Cleaning hands Answer: b) What is the purpose of using a gauze pad after a finger prick? a) To sterilize the puncture site b) To absorb the blood and stop bleeding c) To apply the stain d) To collect the blood sample Answer: b) Blood Smear Specifics: What is the purpose of fixing the blood smear (although not explicitly mentioned, it's an implied step)? a) To stain the cells b) To preserve the cell morphology and adhere them to the slide c) To dry the slide quickly d) To prevent contamination Answer: b) What is the correct order of steps related to slide preparation and viewing? a) Smear blood, stain, fix, view under microscope b) Fix, smear blood, stain, view under microscope c) Smear blood, fix, stain, view under microscope d) Stain, smear blood, fix, view under microscope Answer: c) Blood Typing Specifics: What does the absence of agglutination with all antisera (anti-A, anti-B, and anti-D) indicate? a) Blood type AB+ b) Blood type O+ c) Blood type O- d) Blood type AB- Answer: c) The Ward's 36W0019 kit mentioned is a... a) Blood collection kit b) Simulated ABO-Rh blood typing kit c) Blood staining kit d) Microscope maintenance kit Answer: b hyalomere ‫صبغة الجهاز التنفسي‬