Podcast
Questions and Answers
What is the purpose of using iodine solution, safranin solution, or methylene blue solution when observing cells?
What is the purpose of using iodine solution, safranin solution, or methylene blue solution when observing cells?
- To stain the cells for better visualization (correct)
- To make the cells transparent
- To clean the cells for observation
- To change the shape of the cells
What differential feature was observed in different regions of the cells after staining with iodine solution?
What differential feature was observed in different regions of the cells after staining with iodine solution?
- Varied cell arrangements
- Variation in cell shapes
- Differences in cell coloration (correct)
- Different sizes of cells
Why is it important to put a cover-slip on the material observed under a microscope?
Why is it important to put a cover-slip on the material observed under a microscope?
- To prevent contamination from other samples
- To prevent evaporation of the solution (correct)
- To protect the objective lens of the microscope
- To flatten the material for better focus
What is the darkly colored spherical or oval structure near the center of each cell called?
What is the darkly colored spherical or oval structure near the center of each cell called?
What is the double-layered covering of the nucleus called?
What is the double-layered covering of the nucleus called?
What is the main purpose of gently scraping the inside surface of the cheek for observation?
What is the main purpose of gently scraping the inside surface of the cheek for observation?
After adding methylene blue solution to the material from the cheek cells, what should be done next?
After adding methylene blue solution to the material from the cheek cells, what should be done next?
What is the function of nuclear pores in the nuclear membrane?
What is the function of nuclear pores in the nuclear membrane?
Why do scientists prefer using safranin solution or methylene blue solution for staining cells?
Why do scientists prefer using safranin solution or methylene blue solution for staining cells?
What would happen if one forgets to put a cover-slip on the observed material?
What would happen if one forgets to put a cover-slip on the observed material?
