What Is the Krebs Cycle?

The Krebs cycle definition is a sequence of chemical reactions that occur in the body. The cycle starts with the intake of food, which is broken down into small molecules by the stomach and intestines. These molecules are then absorbed by the body through the small intestines and transported to the liver via the bloodstream. In the liver, the molecules are broken down further into smaller pieces called amino acids. In the next step of the cycle, these amino acids are converted into glucose through a series of chemical reactions called phosphorylation. Then, the glucose enters the main cells of the body and can be used for energy or can be stored as glycogen for later use. When the body needs more energy, it stores the excess glucose as glycogen. Glycogen is a form of starch stored in the liver and muscles that is used by the body for energy during periods of fasting or when no food is eaten for an extended period of time. If the body has excess energy after using up its supply of glycogen, it can then break down the remaining stored fat into fatty acids.

Where Does the Krebs Cycle Take Place?

The Krebs cycle takes place exactly in (the mitochondrial matrix) and converts mitochondrial pyruvate into carbon dioxide and water. The mitochondrial matrix is a dense solution that surrounds the crests of the mitochondria. This matrix contains water, all the needed enzymes, coenzymes, and phosphates which are necessary for the Krebs cycle reactions.

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