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Spirilla


spirilla: flexible spiral bacteria (singular, spirillum).
spirochetes: rigid spiral bacteria.
spleen: the site where red blood cells are destroyed; a reserve blood supply for the body.
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bacilli: rod-shaped
cocci: spherical
spirilla: curved walls
ability to form spores
method of energy production (glycolysis for anaerobes, cellular respiration for aerobes
nutritional requirements
reaction to the Gram stain.
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Bacteria typically have one of three shapes: rods (bacilli), spheres (cocci) or spiral (spirilla). Unicellular, they often stick together forming clumps or filaments.
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Other eukaryotic organelles may have also evolved through endosymbiosis. Scientists believe that cilia, flagella, centrioles, and microtubules may have come from a symbiosis between a spirilla-like bacterium and an early eukaryotic cell.
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