The Origin of Eukaryotes

Eukaryotes are multicellular organisms that contain diverse differentiated cell types. Within almost every cell there are subcellular compartments called organelles that manage specific functions. The most important organelles include the nucleus, mitochondrion, and chloroplast, which are each enclosed within a distinct phospholipid bilayer (double membrane). These membrane-bound organelles are highly complex and provide distinct resources that are critical for life. Humans, plants, fungi, and animals are composed of eukaryotic cells.
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