These are known as the citric acid cycle or Krebs cycle. It is a mystery whether this is something that life developed or if it was simply co-opted from something that did not need life to exist.

Skaneateles, N.Y. — Read the words “game hen” on a menu, as we did at The Krebs in Skaneateles, and you begin to wonder exactly what decade you are dining in. These classic miniature whole ...

Chemicals Essential For A Fundamental Life Cycle Could Form In Interstellar Ice Molecules such as citric acid and many more can form in a laboratory simulation of interstellar clouds.