Question 2: The power of the objective lens you should use when first looking at a slide should be:
The correct answer is 4X.
When first looking at a slide under a microscope, it's best to start with the lowest power objective lens (typically 4X) to locate the specimen easily before switching to higher magnifications.
Question 3: Suppose you were watching a small organism under the microscope and noticed that it moved away from you and then to the right. Which direction(s) did the organism actually move?
The correct answer is toward you and to the right.
Due to the inversion effect of microscopes, when an organism appears to move away from you, it is actually moving toward you in the reverse perspective.
Question 4: We used iodine to help us observe our cheek epithelial cells. Why? What purpose did the iodine serve?
Iodine serves as a staining agent. It enhances contrast in the cells, making structures like the nucleus more visible against the background by staining the cell components, helping to reveal the morphology of the cheek epithelial cells.
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