Six astronauts are still on the space station as part of a planned year-long stay in space, the longest tour of duty in the station's 15-year history.
The molecular formula of citric acid is C 6 H 8 O 7. The chemical formula for citric acid is best shown by a diagram of its complete structural formula. This shows how the atoms are arranged in the molecule. Citric acid has three carboxyl or-COOH groups and is triprotic in nature.
All fuel molecules are oxidized to citric acid cycle intermediates. 2. The citric acid cycle is important for the biosynthesis of glucose, lipids, and some amino acids. The citric acid cycle breaks down a 6 carbon compound (citrate) to a 4 carbon compound (oxaloacetate).ll fuel molecules are oxidized to citric acid cycle intermediates. 2. The citric acid cycle is important for the biosynthesis of glucose, lipids, and some amino acids. The citric acid cycle breaks down a 6 carbon compound (citrate) to a 4 carbon compound (oxaloacetate).