Question

Is it true that an eukaryotic cell without mitochondria has been recently discovered? If yes, then what would be the energy source for such a cell?

Answer 1

The organism is Monocercomonoides. It jettisoned the organelles fairly recently in evolutionary terms.Instead of relying on mitochondria, the organism likely uses enzymes in its cytoplasm to break down food and furnish energy.
Actually, by definition " Eukaryotes are the ones with mitochondria". Very recently scientists discovered this uncanny exception and looking for same kind of organisms.