Could a creature exist that runs on both carbon dioxide and oxygen, and thus only needs one breath for life?

Question

If plants can can convert carbon dioxide into oxygen and release energy, and animals can convert oxygen into carbon dioxide and release energy, could those two organs came together in one creature, so that it would only need one breath, and then run the rest of it's energy off of circulating it's oxygen and carbon dioxide?

Answer 1

Plants are capable of using CO2 as food because of photosynthensis, making use of solar energy to bust up the CO2. But it's an interesting thought, the idea of plants that are capable of using O2 directly, which I think is a more likely scenario than animals capable of making use of CO2 through photosynthesis, because the energy yields are too low for an active animal. It's much like trying to design a car that will run both on gasoline and solar power---if it's powerful enough to move fast and heavy, solar power panels won't be of too much help.

Answer 2

i don't know. but that is very interesting

Answer 3

No

Answer 4

No.