Scientists think that protists are the oldest eukaryotes. Protists most likely evolved from prokaryotic cells, as explained by the endosymbiotic theory. This theory is well-supported by evidence.
CK-12 (High School)
How did life evolve from prokaryotes to eukaryotes?
RST.1 - Analysis & Evidence, RST.2 - Main Ideas
DEPTH OF KNOWLEDGE (DOK) LEVELS:
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