1 What are the methods of microbial infection 2 Define magni

1.    What are the methods of microbial infection?

2.    Define magnification

3.    Define resolution

4.    Define contrast

5.    Which wavelength is a good choice for a high resolution image?

6.    Explain a positive staining

7.    Explain a negative staining

8.    Explain acid-fast stain

9.    When is acid fast stain necessary?

10. How is Gram stain done?

11. What is the difference between gram + and gram -?

12. What makes a Gram stain go positive or negative? Explain in 2 to 3 lines

     13. Give 2 differences between electron microscope and light microscope

     14. What is Ziehl-Neelsen acid-fast stain used for?

     15. Define “taxonomy”

Solution

1.Methods of microbial infection are:

2.Magnification is the act of enlarging something in appearance and not in physical size or it can be the degree to which something can be magnified

3.Resolution is the act of resolving something or the process or capability of making the individual parts of an object distinguishable.