Krebs cycle definition, a cycle of enzyme-catalyzed reactions in living cells that is the final series of reactions of aerobic metabolism of carbohydrates, proteins, and fatty acids, and by which carbon dioxide is produced, oxygen is reduced, and ATP is formed. Start studying Ex Phys Final Exam. References. Pyruvate oxidation and the citric acid cycle. The citric acid cycle. This is the currently selected item. B) producing lactate for gluconeogenesis. Google Classroom Facebook Twitter. aerobic respiration occurs in the presence of oxygen, while anaerobic metabolism occurs in the absence of … Learn vocabulary, terms, and more with flashcards, games, and other study tools. Making water, the productive way: Term. See more. Citric acid cycle Characterized by Hans Krebs formerly called Krebs cycle What are the three parts of cellular respiration? Krebs cycle (citric Acid cycle) releases plenty of energy (ATP) required for various metabolic activities of cell. Pyruvate oxidation. Glycolysis takes place in the cytosol, and the electron transport chain involves both the intermembrane space and the inner mitochondrial membrane. The Citric Acid Cycle (Krebs Cycle) Flashcards | Quizlet The citric acid cycle has an important anabolic function by: A) allowing for the conversion of certain carbon atoms from even-chain fatty acids into glucose. 5th Edition. Krebs / citric acid cycle. The citric acid cycle takes place in the mitochondrial matrix. ART FOR SCIENCE / Getty Images. However, now it has been known that the first product is indeed citric acid and thus the use of this name has since been discouraged. C) providing metabolites for the synthesis of cholesterol, amino acids and glucose. Definition. Glycolysis Citric Acid Cycle Oxidative phosphorylation: ... How was the citric acid cycle characterized and why is it cyclical? Definition. By this cycle, carbon skeleton are got, which are used in process of growth and for maintaining the cells. Krebs Cycle Definition. The citric acid cycle occurs in the cristae or membrane folds of mitochondria. This cycle is also termed tricarboxylic acid (TCA) because it was then not certain whether citric acid or some other tricarboxylic acid (g., isocitric acid) was the first product of the cycle. The Krebs cycle and the Electron Transport take place in the: mitochondria: 18: 1549683376: Pyruvic Acid: a 3 carbon compound: 19: 1549683377: Why is the Krebs cycle also known as the citric acid cycle: because citric acid (a 6 carbon molecule)is the first compound formed in this cycle: 20: 1549683378 Pyruvate from glycolysis is transported into the mitochondrial matrix for the citric acid cycle. Overview and steps of the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid (TCA) cycle. Lehninger Principles of Biochemistry. Email. Definition. The Krebs Cycle, also called the citric acid cycle, is the second major step in oxidative phosphorylation.After glycolysis breaks glucose into smaller 3-carbon molecules, the Krebs cycle transfers the energy from these molecules to electron carriers, which will be used in the electron transport chain to produce ATP.. Krebs Cycle Overview