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12 Interesting Fun Facts About Bacteria for Kids

Bacteria are like the cells that make up our bodies. They are frequently considerably smaller than our cells and may be found practically anywhere on the planet. They are most likely residing on your skin and in your body right now.


Many bacteria are beneficial and vital for digestion, energy generation, vitamin creation, and overall wellness. However, some bacteria, such as Salmonella, are dangerous and may make people extremely sick.

This article will provide information about the microorganisms that live on and within our bodies. Discover interesting facts and information about the most prevalent bacteria that live in the human body.

1. Bacteria are Single-Celled bacterium (single bacterium)


Bacteria are unicellular creatures and contain only one cell, while our bodies are made up of billions. Many bacteria, like mammals, obtain sustenance from their surroundings. They have a DNA blueprint, known as a “bacterial chromosome,” and can reproduce.

2. Bacteria are older than dirt.

Bacteria have been on earth’s surface for more than 3.5 billion years, even before there was any dirt, making them the planet’s oldest known life form.

3. Bacteria are quick.

Bacteria are quick

A bacteria may travel 100 times its body length in one second. To put this in context, a huge fish can only move around 10 times its body length in the same amount of time. Some bacteria grow rapidly, while others grow slowly.

4. You even consume bacteria.

Every day, you consume around 6 million live beings, according to new studies. Of course, those creatures are merely microorganisms that dwell in, on, and around humans. Bacteria are used to produce several foods, including yogurt, cheese, Kimchi, and miso.

5. Most bacteria are actually good.

Most bacteria are actually good

Bacterial cells outnumber human cells in your body. They aid in functions such as digestion and protect your body from harmful microorganisms. Less than 1% of all microorganisms on the planet will make you sick.

6. Exposure to light can cause chemical reactions within bacteria.

Light can trigger chemical reactions within microorganisms that damage their DNA or the proteins required to exist and function. A virulent form of bacteria becomes significantly more harmful when exposed to sunlight.

7. Approximately 40 million bacterial cells are found in one gram of soil.

A gram of soil contains around 40 million microorganisms. The world is predicted to have at least 5 nonillion microorganisms, and bacteria are expected to make up a large portion of the earth’s biomass. Bacillus, Arthrobacter, Pseudomonas, Agrobacterium, Alcaligenes, Clostridium, Flavobacterium, Corynebacterium, Micrococcus, Xanthomonas, and Mycobacterium are common bacterial genera isolated from soil.

8. Bacteria were discovered in 1674.

They were discovered in 1674 by Dutch scientist Antonie van Leeuwenhoek while examining scrapings from the human mouth using a freshly built microscope. They were named “animalcules” (from the Latin word “animalculum,” which means “small animal”). Although he saw multicellular creatures in pond water, most of the animalcules are today regarded as unicellular organisms.

9. Bacteria can adapt very quickly.

Bacteria can adapt very quickly

Bacteria evolve fast, making it challenging to develop an antibiotic that consistently works. Bacteria might grow resistant to antibiotics if they are used too frequently. This is why people who have a lengthy history of antibiotic usage should get their homes tested to ensure that no hazardous germs are present.

10. Bacteria have a distinctive shape.

Bacteria are commonly formed as spheres, rods, or spirals. Some bacteria can be shaped like a comma or a corkscrew. Bacteria of various shapes exhibit diverse physical characteristics to the outside environment and these characteristics aid cells in coping with and adapting to external circumstances.

11. Bacteria may live in extremely severe environments, such as deep parts of the earth’s crust and radioactive waste.

Microbes survive in some of the most hostile habitats on the planet, from poisonous hot springs to high-altitude deserts. Organisms that can tolerate near-boiling heat or near-freezing cold, high pressure, or high salt, as well as conditions rich in acids, alkalis, metals, or radioactivity, are considered extremophiles.

12. Bacteria can be present in various places in your home.

Bacteria can live in a wide range of severe circumstances. From ice to hot springs to radioactive trash, there is something for every kind. Bacteria can develop on a dish that has been sitting in your room for a few days.

Here are several ways to protect oneself against harmful bacteria:

  • One of the most crucial things you can do is wash your hands.
  • Another thing you can do to keep viruses at bay is to consume nutritious meals like fruits and vegetables. Vitamin C and other minerals in fruits and vegetables can help boost your immune system. Germs may be defeated by your body, especially your immune system. Your body has the ability to generate cells and antibodies that can kill pathogens.
  • Taking a long shower or bath and using soap will destroy germs on your skin, including bacteria. Brushing your teeth and using mouthwash destroys bacteria in your mouth.
  • Cleaning, in general, has the ability to destroy microorganisms. Germs on the kitchen counter will be killed if you wipe it clean with soap. Germs may adhere to your hands if you contact a dirty counter with your hands. They will then be able to enter your body.
  • Cleaning your room can help minimize germs and so keep you safe.
  • Many germs enter our bodies by traveling on food. Salmonella may be present in the chicken you are eating for supper. Germs are generally eradicated when chicken is cooked correctly. Proper cooking and the use of clean utensils, plates, pans, and other items will help keep bacteria and other germs at bay.


You would not exist without microbes, for better or worse. Bacteria most likely helped make the oxygen you breathe! However, when there is something good, there is also something terribly awful. Protecting against bacterial intruders who may cause havoc if given the opportunity is critical.

We hope you learned something new about bacteria today. For more such interesting facts, visit our website!

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