Problem
1. Why is a counterstain always lighter than a primary stain?
2. How do you use the following objective lens when we are observing bacteria: 10X, 20X, 40X and 100X
3. Name 2 things that may go wrong when you are making a negative stain.
4. What is the dye used in negative staining?
5. What are the stains and the procedures of Gram staining?
6. Name 4 things that may go wrong when you are Gram staining.
7. What could have gone wrong if your Gram positive rod looks like a Gram negative rod?
8. What could have gone wrong if your Gram negative cocci looks like a Gram positive cocci?