They lack a mitochondria
The correct answer will be organelle mitochondria . ;
Organisms in the proposed kingdom Archaezoa lack mitochondria, which are essential cellular organelles involved in energy production. This absence suggests that they diverged from eukaryotic ancestors before the endosymbiotic event that led to the presence of mitochondria in most eukaryotic cells. Archaezoa may exhibit alternative organelles like hydrogenosomes, showcasing their unique adaptations.
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