Endosymbiosis is thought to have occurred after eukaryotic cells had already evolved complex organelles like the Golgi apparatus and endoplasmic reticulum. t or f

Answer 1

False. Endosymbiosis is a theory that explains the origin of eukaryotic cells, suggesting that they evolved from a symbiotic relationship between different prokaryotic cells. According to this theory, certain organelles, such as mitochondria and chloroplasts, originated from free-living bacteria that were engulfed by ancestral eukaryotic cells. This process is thought to have occurred before the evolution of more complex organelles like the Golgi apparatus and endoplasmic reticulum. Therefore, the statement is incorrect.