Bacteria Lab

Gram Stains

First of all, review the steps for Gram Staining at http://www-micro.msb.le.ac.uk/video/Gram.html

1. Who developed the Gram Stain technique?

2. Why is gram staining important for classifying bacteria?

3. Compare gram negative bacteria to gram positive bacteria.

Types of Bacteria

http://helios.bto.ed.ac.uk/bto/microbes/shape.htm

After reading the page and observing the pictures, you should be able to answer the following.

4. What are the four shapes of bacteria?

5. How are colonies analyzed from an agar plate?

6. Why are there so few colonies in the sample taken from the mouth?

Bacteria Images

http://www.meddean.luc.edu/lumen/DeptWebs/microbio/med/gram/slides.htm - Slide Show

http://www.kcom.edu/faculty/chamberlain/Website/gallery.htm

Bacteria Pathogens

http://www.cdc.gov/ncidod/dbmd/ - go to disease listing - you may also want to access the CDC's main page to find information on some of these. Search before asking!

For each of the diseases listed, determine the causative agent, method of transmission and symptom