Yes, bacteria is an organism. Bacteria is large group of prokaryotic microorganisms that have a variety of different shapes and sizes and they have both parasitic and symbiotic relationships with animals and plants.
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A parasite is an organism that lives in or on another organism (the host) and benefits from the relationship at the expense of the host. Bacteria and viruses can both be parasites, depending on their interactions with the host organism.
Viruses require a living organism to do anything - most especially to reproduce.
Bateria are made of cells APEX~:)
Bacteria are living organisms. They are single-celled microorganisms that exist in various environments and play essential roles in many ecosystems.
This is known as a symbiotic relationship, where one organism lives in or on another organism. The organism living within is called an endosymbiont (e.g., bacteria within the human gut), while the organism living on the surface is an ectosymbiont (e.g., barnacles on a whale).