What is formed as a result of the Krebs cycle?

The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle, is a crucial metabolic pathway that occurs in the mitochondria of cells. Its primary function is to oxidize acetyl-CoA, which is derived from carbohydrates, fats, and proteins, into carbon dioxide and energy-carrying molecules.

During the Krebs cycle, each turn of the cycle generates carbon dioxide as a waste product, which is expelled from the body and can be measured in gas exchange. Additionally, one of the significant outcomes of the Krebs cycle is the production of ATP. ATP (adenosine triphosphate) is the primary energy currency of the cell, providing the necessary energy for various cellular processes.

Moreover, the cycle produces reduced cofactors in the form of NADH and FADH2. These molecules carry electrons to the electron transport chain, where they contribute to further ATP generation through oxidative phosphorylation. This comprehensive energy-harvesting process highlights how the Krebs cycle plays an integral role in energy metabolism.

In summary, the Krebs cycle results in the formation of carbon dioxide and ATP, making this the correct answer to the question posed.