A particle between 0.05 and 0.2 microns containing genetic material enclosed in a protective coat is called a .

A is a kind of virus that can infect bacteria.

is the substance that helps to tell the difference between a bacterial cell and an archaeal cell.

This technique helps to classify bacteria based on their cell-wall construction.

The bacteria that live in the stomachs of cows and help break down cellulose into energy live in a state with the cow.

A bacteria that uses Earth’s magnetic field to help it find food and appropriate living conditions is called .