baktéria
Baktéria are single-celled microorganisms that are found in virtually every environment on Earth. They are prokaryotes, meaning their cells lack a nucleus and other membrane-bound organelles. Bacteria vary greatly in size and shape, and they can be found in diverse forms such as spheres (cocci), rods (bacilli), and spirals (spirilla). Their genetic material is typically a single circular chromosome located in the cytoplasm.
Many bacteria play crucial roles in ecosystems. For instance, they are essential decomposers, breaking down dead
However, some bacteria are pathogenic, meaning they can cause disease in plants and animals. These disease-causing