I think it’s really, amazingly awesome that cellular respiration and photosynthesis undo each other. It’s something I take for granted most of the year, but when it comes time to study the concepts for the test, I begin to marvel at the symmetry of it all.
I love those epiphanies you get when something finally clicks. I re-experience that epiphany every time I look at cellular respiration and photosynthesis again. I re-examine the electron transport chains, the Krebs cycle and Calvin cycle, and glycolysis and the formation of glucose. I gasp again as it all sinks in.
Just wanted to register that awe.