Why is the citric acid cycle a cyclic pathway?
Why is the citric acid cycle a cyclic pathway?
Why is the citric acid cycle a cyclic pathway rather than a linear pathway? It is easier to remove electrons and produce CO2 from compounds with three or more carbon atoms than from a two-carbon compound such as acetyl CoA. Both electron transport and ATP synthesis would stop.
What is the purpose of the citric acid cycle?
The function of the citric acid cycle is the harvesting of high-energy electrons from carbon fuels. Note that the citric acid cycle itself neither generates a large amount of ATP nor includes oxygen as a reactant (Figure 17.3).
Why is the citric acid cycle called a cycle quizlet?
Why is the citric acid cycle called a cycle? The four-carbon acid that accepts the acetyl CoA in the first step of the cycle is regenerated by the last step of the pathway. NAD+ and FAD are not available for glycolysis and the citric acid cycle to continue. You just studied 15 terms!
What is the Kreb cycle in simple terms?
Krebs cycle. A series of chemical reactions that occur in most aerobic organisms and are part of the process of aerobic cell metabolism, by which glucose and other molecules are broken down in the presence of oxygen into carbon dioxide and water to release chemical energy in the form of ATP.
What are the two main benefits of the citric acid cycle?
The two main purposes of the citric acid cycle are: A) synthesis of citrate and gluconeogenesis. B) degradation of acetyl-CoA to produce energy and to supply precursors for anabolism.
What type of reaction is the Krebs cycle?
There are only 4 types of reactions in the Krebs Cycle: Condensation, Hydration/Dehydration, Redox, and Substrate level phosphorylation. All enzymes/coenzymes can be found in the mitochrondia of eukaryotes and the cycle takes place in the matrix of the mitochrondia.
What are the main features of the Krebs cycle?
The citric acid cycle, shown in —also known as the tricarboxylic acid cycle (TCA cycle) or the Krebs cycle—is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate—derived from carbohydrates, fats, and proteins—into carbon dioxide.