Bacteria

Topic Content:

Bacteria are the most common infectious agent. They are single-cell living microorganismsMicrobes are organisms that are too small to be seen without using a microscope. They include organisms like bacteria, archaea, and single-cell eukaryotes (organisms whose cells have a nucleus e.g. amoeba... More that use the human body to replicate.

Bacteria have three main shapes:

1. Rod-shaped, called bacillus .

2. Spherical-shaped, called coccus .

3. Spiral-shaped, called spirochete