What are the three parts of cellular respiration? aerobic respiration occurs in the presence of oxygen, while anaerobic metabolism occurs in the absence of … Glycolysis Citric Acid Cycle Oxidative phosphorylation: ... How was the citric acid cycle characterized and why is it cyclical? Glycolysis takes place in the cytosol, and the electron transport chain involves both the intermembrane space and the inner mitochondrial membrane. Email. References. 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. See more. The citric acid cycle takes place in the mitochondrial matrix. Google Classroom Facebook Twitter. Making water, the productive way: Term. ART FOR SCIENCE / Getty Images. Pyruvate from glycolysis is transported into the mitochondrial matrix for the citric acid cycle. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Lehninger Principles of Biochemistry. Overview and steps of the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid (TCA) cycle. Pyruvate oxidation and the citric acid 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 Start studying Ex Phys Final Exam. 5th Edition. 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. Krebs cycle (citric Acid cycle) releases plenty of energy (ATP) required for various metabolic activities of cell. This is the currently selected item. 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. Definition. The citric acid cycle. By this cycle, carbon skeleton are got, which are used in process of growth and for maintaining the cells. Pyruvate oxidation. Citric acid cycle Characterized by Hans Krebs formerly called Krebs cycle C) providing metabolites for the synthesis of cholesterol, amino acids and glucose. 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. Definition. Definition. Krebs / citric acid cycle. B) producing lactate for gluconeogenesis. The citric acid cycle occurs in the cristae or membrane folds of mitochondria. Krebs Cycle 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