Inside the mitochondria, what are the actions? How do they work? What is the cycle? What is a citric acid cycle? What are the major products? What are the waste products? What are the electric carrier molecules FAD and NAD what is their purpose? how does the electron chain transport work?
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Questions: Below is a diagram of the Citric Acid Cycle. Where within the mitochondria does this process take place? Use the table below to calculate the products of the Citric Acid Cycle when: 1 Acetyl CoA enters the cycle, Glucose is oxidized to 2 acetyl CoA molecules, A 16 carbon fatty acid chain is oxidized to 8 acetyl CoA.
Sri K.
Metabolic Pathways and Energy Production 1. When one Acetyl- CoA completes the Citric Acid Cycle ( CAC ), how many of each of the following are produced : • NADH • FADH₂ • CO₂ • GTP ( ATP ) 2. How many reactions in the citric acid cycle produce a reduced coenzyme ( are oxidation-reduction reactions ) ? 3. What substance is a substrate in the first reaction of the CAC and a product in the last reaction ? 4. What are the products from 1 glucose molecule (two turns of the CAC) ? 5. What compounds are needed to start the CAC ? 6. Which reactions of the CAC involve oxidative decarboxylation ( oxidation + loss of C-atom in the form of CO₂ ) ? 7. How many molecules ATP are produced when one NADH is oxidized in the ETC? 8. How many molecules ATP are produced when one FADH₂ is oxidized in the ETC? 9. What is meant by oxidative phosphorylation?
Adi S.
What is considered a product of the citric acid cycle? NAD+ oxaloacetate acetate carbon dioxide α-ketoglutarate In what part of the eukaryotic cell is oxidative phosphorylation carried out? outer mitochondrial membrane cytoplasm mitochondrial matrix plasmatic membrane inner mitochondrial membrane Which statement about Complex I is TRUE? The membrane-embedded part of the complex has two proton half-channels. One set of half-channels is exposed to the matrix and the other to the intermembrane space. QH2 takes up two protons from the matrix for its oxidation. The flow of two electrons from NADH to coenzyme Q through NADH-Q oxidoreductase leads to the pumping of two hydrogen ions out of the mitochondrial matrix. The complex is not able to act as a proton pump. Which statement about the Q cycle is FALSE? The Q cycle takes place in Complex III. In the second half of the cycle, a second QH2 gives up its protons to Complex III, one to a second molecule of cytochrome c, and the other to reduce Q•– to QH2. The removal of two protons from the matrix contributes to the formation of the proton gradient. The newly formed Q dissociates and enters the Q pool. In the first half of the cycle, one of two electrons of a bound QH2 is transferred to cytochrome c and the other to a bound Q, forming the semiquinone radical anion Q•–.
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