Can Humans Live Without bacteria?

“But as long as humans can’t live without carbon, nitrogen, protection from disease and the ability to fully digest their food, they can’t live without bacteria,”— Anne Maczulak, famous microbiologist. It can be quite unnerving to know that there are bacteria all over your skin, hair, and even inside the body.

What do you think would have happened if we have no knowledge of the existence of microorganisms?

In the deep oceans, many worms, shellfish, and other animals rely on bacteria for all of their energy. Without microbes, they too would die, and the entire food webs of these dark, abyssal worlds would collapse. Shallower oceans would fare little better. Waste would rapidly build up, for microbes are lord of decay.

Do bacteria die?

Bacteria don’t have a fixed lifespan because they don’t grow old. But if we assume that the global bacteria population is stable, then it follows that one bacterium must die for each new one that is produced. Bacteria divide somewhere between once every 12 minutes and once every 24 hours.

What would happen if bacteria such as Rhizobium disappeared from our planet?

it would be not possible because we the human being depends on animal and plants for the food and plants depends upon bacteria like leguminous plants peas depends upon rhizobium bacteria for nitrogen fixation in to atmosphere for better growth.

What will happen if all the bacteria and fungi are destroyed?

There will be no disease and death.

How do bacteria helps us in sustaining life here on Earth?

The most influential bacteria for life on Earth are found in the soil, sediments and seas. Well known functions of these are to provide nutrients like nitrogen and phosphorus to plants as well as producing growth hormones. By decomposing dead organic matter, they contribute to soil structure and the cycles of nature.