What organelles bacteria and animals don't share?

Bacteria lack membrane-bound organelles, which distinguishes them from animal cells. Notable organelles absent in bacteria include the nucleus, mitochondria, and endoplasmic reticulum. Instead, bacteria have a simpler structure, with their genetic material located in a nucleoid region and energy production occurring across their cell membrane. In contrast, animal cells possess these complex organelles, allowing for greater compartmentalization and specialization of cellular functions.