Seriously though what even are fungus? Straddling some weird position between plants and animals, containing an impressive amount of shared DNA with humans, engaged in weird psycho-chemical communion with the forest, dancing on the edge of immortality?
I sort of hate that phrase, but that's just me being curmudgeonly. Thanks to that phrase alone, millions of people now known the name of a cellular organelle, and the function it plays in cellular life. But even so, the story of the mitochondrion is alluring by itself, and I love telling it.