Bacilli, which are rod-shaped bacteria, typically possess several key organelles, including ribosomes for protein synthesis, a plasma membrane for regulating the passage of substances, and a cell wall for structural support and protection. Some bacilli may also have flagella for motility and pili for attachment to surfaces. Unlike eukaryotic cells, bacilli lack membrane-bound organelles such as a nucleus or mitochondria. Their genetic material is usually organized in a single circular chromosome located in the cytoplasm.
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