Bacteria are among the smallest living things. A single bacterium consists of just one cell. Not all bacteria are harmful. There are different unicellular organisms and types of bacteria.

Jon Chase: Bacteria are a type of microorganism, each made up of just one cell. Some bacteria are harmful and cause disease, and some are useful, like the one hundred trillion bacterial cells that ...

Selman Waksman is credited with organizing the research program on soil bacteria at Rutgers University in New Jersey that led to the identification of the groundbreaking antibiotic streptomycin ...