| A | B |
|---|
 | Bacilli |
 | Cocci |
 | Spirilla |
| protozoan | one-celled, animal-like protist |
| spirilla are shaped like | spirals |
| cocci are shaped like | circles |
| bacilli are shaped like | rods |
| all bacteria are classified in the kingdom, | Monera |
| bacterium with a protective wall is called an | endospore |
| the most primitive type of bacteria is | Archaebacteria |
| unicellular means | one cell |
| Four types of food preservation | canning, pickling, freezing, drying |
| Pasteurization | process that slows down spoiling of milk and other dairy products. |
| Louis Pasteur | Father of Bacteriology |
| nitrogen-fixing bacteria | name given to bacteria that change nitrogen into compounds that plants can use |
| decomposition | breakdown of dead material by simple organisms. |
| How are some types of bacteria harmful to plants | They can cause plant disease such as blight or rot. |
| An advantage of canning | prevents new bacteria from growing |
| a disadvantage of canning | some nutrition is lost |
