Medically the evaluation by George Krucik, MD, MBA — composed by Amber Erickson Gabbey — to update on July 8, 2015

What room Bacteria?

Bacteria, additionally called germs, space microscopic organisms no visible through the naked eye. Bacteria are everywhere, both inside and also outside of your body. Bacteria can live in a variety of environments, from hot water come ice. Some bacteria are good for you, when others deserve to make you sick.

Bacteria room single-celled, or simple, organisms. Though small, bacteria are powerful and complex, and also they deserve to survive in extreme conditions. Bacteria have a tough protective coating that rises their resistance to white blood cell in the body.

Some bacteria have a tail, referred to as a flagellum. The flagellum help a bacterium to move around. Other bacteria have sticky hair-like appendages that help bacteria castle stick come one other, difficult surfaces, and also human human body cells.

You are watching: Which of the following statements about the domain bacteria is true

There are many bacteria in the human body, particularly in the stomach and also mouth. Bacteria are discovered on surfaces and also in building material such together water, soil, and also food.

What room the types of Bacteria?

Bacteria have the right to be aerobic, anaerobic, or facultative anaerobes. This terms define how lock respond come oxygen. Aerobic bacteria require oxygen to live. Anaerobic bacteria will certainly die about oxygen. Facultative anaerobes function best v oxygen but do not need it.

What room the services of Bacteria?

Some bacteria are an excellent for you, including the bacteria in her digestive system, or gut. These bacteria help to failure food and keep friend healthy. Other an excellent bacteria can create oxygen are offered to produce antibiotics. Bacteria are supplied in food production to do yogurt and fermented foods.

See more: What Is 5 Divided By 8 Show Work, What Is 5 Divided By 8 Using Long Division

The ecosystem depends on bacteria to function properly. For example, bacteria failure dead issue in the environment, prefer dead leaves, publication carbon dioxide and also nutrients in the process. Without the release of carbon dioxide, plants space unable to grow.

How are Bacteria Harmful?

Though over there are plenty of more an excellent bacteria than bad, part bacteria are harmful. If friend consume or come in contact with harmful bacteria, they may reproduce in your body and release toxins that can damages your body tissues and make you feel ill. Harmful bacteria are dubbed pathogenic bacteria because they cause disease and illnesses choose strep throat, staph infections, cholera, tuberculosis, and food poisoning.

critical medically the review on November 21, 2013


Medically reviewed by George Krucik, MD, MBA — composed by Amber Erickson Gabbey — update on July 8, 2015

Read this next

AboutCareersAdvertise with us