Biology

20 Examples Of Bacteria With Types & Characteristics

Bacteria are single-celled microorganisms that constitute an independent kingdom in the world of living beings.

Despite its tiny size, its influence on Earth is immense. These microorganisms are found everywhere, from the ground we walk on to the inside of our own body.

They are a key piece in ecosystems and have a significant impact on human health and the environment.

Types of bacteria And its groups 

There are various types of bacteria, each with its unique characteristics. The main groups include:

  • Gram-positive bacteria : They have a single layer of peptidoglycan in their cell wall.
  • Gram-negative bacteria : They have a more complex cell wall that consists of two layers of peptidoglycan.
  • Anaerobic bacteria : They survive in the absence of oxygen.
  • Aerobic bacteria : They require oxygen for their metabolism.
  • Autotrophic bacteria : They can produce their own food through photosynthesis or chemosynthesis.
  • Heterotrophic bacteria : Dependent on organic sources to obtain nutrients.

Characteristics of bacteria

Bacteria have distinctive characteristics, such as their varied shape (cocci, bacilli, spirillum), mobility by means of flagella or serpentine movement, and the absence of a defined nucleus (prokaryotes).

Furthermore, their ability to reproduce asexually through binary fission allows them to multiply rapidly.

20 Examples of bacteria of kingdom 

Here we present 20 examples of bacteria that represent the diversity of this kingdom:

  1. Escherichia coli : Common in the human intestine.
  2. Staphylococcus aureus : May cause skin infections.
  3. Mycobacterium tuberculosis: Responsable de la tuberculosis.
  4. Clostridium botulinum : Produces botulinum toxin.
  5. Helicobacter pylori : Involved in gastric ulcers.
  6. Cyanobacteria : They carry out photosynthesis and release oxygen.
  7. Streptococcus pyogenes : Causes strep throat.
  8. Salmonella : Related to food poisoning.
  9. Bacillus anthracis : Causative agent of anthrax.
  10. Chlamydia trachomatis : Causes sexually transmitted infections.
  11. Rhizobium : Forms symbiosis with legume roots.
  12. Lactobacillus : Used in food fermentation.
  13. Pseudomonas aeruginosa : Can cause hospital-acquired infections.
  14. Treponema pallidum : Causes syphilis.
  15. Acetobacter aceti : ​​Participates in the production of vinegar.
  16. Neisseria gonorrhoeae : Causes gonorrhea.
  17. Vibrio cholerae : Responsible for cholera.
  18. Yersinia pestis : Causative agent of bubonic plague.
  19. Corynebacterium diphtheriae : Cause la diphtheriae.
  20. Bacillus thuringiensis : Used as a biological insecticide.

Importance of bacteria

Bacteria are essential for life on Earth. They contribute to the decomposition of organic matter, the fixation of nitrogen in the soil, and are crucial in the production of food and medicines, such as antibiotics.

Additionally, some beneficial bacteria live in our body, aiding in digestion and strengthening our immune system.

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