| A | B |
|---|
| Algae | Plant-like protists. |
| Bacteria | The simplest forms of life known on Earth. They are unicellular and are normally classified by their shapes. |
| Binary Fission | A form of asexual reproduction in which one cell divides to form two identical cells. |
| Decomposers | Organisms, like protists, bacteria, and fungi, that recycle nutrients back to the soil. |
| Fungi | An organism that absorbs nutrients from the environment. |
| Host Cell | Living cell in which a virus can actively multiply or in which a virus can hide until activated by environmental stimuli. |
| Microbe | An organism invisible to the naked eye, especially one that causes disease. |
| Mold | Fungi-like protist |
| Mutant | An organism genetically different from its parent. |
| Parasite | An organism that feeds on a living host. |
| Pathogen | Disease causing agent. |
| Protista | Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi. |
| Protozoa | Animal like protists. |
| Resistant | Organisms that grow even in the presence of an antimicrobial agent. |
| Virus | Genetic material surrounded by a protein shell that invades living cells to reproduce. |
