Home Page

The complete history of the Universe -- from the Big Bang to 200 my into the future

Loading

History of the Universe eBook. 398 pages, 300 illustrations only $2.99

Previous pageNext page

Bacterial Benefits

Despite their relative simplicity, bacteria carry out most of the key chemical changes of carbon, nitrogen, and sulfur in the living world. The eukaryotes, like us humans, perform relatively small changes to their molecules.

Benefits of bacteria include:

    Bacteria are the only living things which can fix nitrogen. They are therefore essential to all other life on Earth.

    Some plants such as beans keep nitrogen fixing bacteria as symbionts in nodules on their root.

    Bacteria are the major decomposers of dead plants and animals, so freeing their atoms to be re-used by other living things.

    Cows and other animals keep bacteria in their stomachs, as only bacteria can break down the tough cell walls of plants.

    People use bacteria to turn wine into vinegar and milk into cheese and yogurt.

    They are increasingly used in biotechnology to manufacture proteins.

There is information about good and bad bacteria at Good and Bad Bacteria

Previous pageNext page


History of the Universe eBook. 398 pages, 300 illustrations only $2.99

eBook only $2.99
398 pages, 300 images

"I find the science fabulous...an extremely useful teaching tool."
Professor David Christian

Become a Citizen of the Universe

and get your free badge!