Both of these processes occur during cell metabolism. Which of the following is the correct sequence of stages in cellular respiration. The overall reaction is: C 6 H 12 O 6 + 6O 2 yields 6CO 2 + 6H 2 O + energy (as ATP). In aerobic respiration, the flow of electrons terminates with molecular oxygen being the final electron acceptor. Chemo-trophic micro-organisms vary in terms of their electron acceptors and their energy sources. The final product of the Krebs cycle is _______.... Anaerobic Respiration: Definition, Equation & Examples, Aerobic Cellular Respiration: Stages, Equation & Products, What is Chemiosmosis? Our experts can answer your tough homework and study questions. Describe and differentiate among the final electron acceptors for aerobic respiration, anaerobic respiration, and fermentation. Which is one major difference between anaerobic and aerobic respiration. This process is the most energy-efficient in organisms and results in the most ATP produced per molecule of glucose oxidized compared the anaerobic respiration. These include nitrate ions, sulfate ions, or even carbon dioxide. The cell lacks a sufficient amount of any appropriate, inorganic, final electron acceptor to carry out cellular respiration. What is the final acceptor for its electrons during fermentation?What is the final acceptor for its electrons during aerobic respiration? Aerobic respiration is the process by which a cell makes ATP energy by oxidizing glucose molecules in the presence of oxygen gas. In aerobic respiration, the final electron acceptor is an oxygen molecule, O 2. - Definition & Examples. How much ATP is produced? Fill in the blank. These can be sulfate ions, nitrate ions or carbon dioxide. Organisms in which oxygen serves as a final electron acceptor are termed as aerobic organisms and the rest of them are termed as anaerobic organisms. O 02 is the final electron acceptor in aerobic cellular respiration but not in fermentation The final electron acceptor is NADH in respiration and a 3-C molecule in fermentation O NADH is oxidized back to NAD+ at the end of fermentation but not in aerobic respiration Aerobic respiration uses glycolysis to make ATP but fermentation does not. AEROBIC RESPIRATION. D)It combines with H2O to help drive the formation of ATP. In aerobic respiration, the final electron acceptor (i.e., the one having the most positive redox potential) at the end of the ETC is an oxygen molecule (O 2) that becomes reduced to water (H 2 O) by the final ETC carrier. 400. Anaerobic respiration is a type of respiration where oxygen is not used; instead, organic or inorganic molecules are used as final electron acceptors. Anaerobic exergonic pathways do not require oxygen and include anaerobic respiration and fermentation. Final Electron Acceptor thus is the final thing to accept an electron, particularly at the point where the organism or at least biochemical pathway is now done (finished) with the electron. Respiration can be aerobic or anaerobic, depending on the final electron acceptor. nitrate. This electron carrier, cytochrome oxidase, differs between bacterial types and can be used to differentiate closely related bacteria for diagnoses. CHEMIOSMOSIS • As electrons move from one molecule to another in the chain, energy is released via a process called chemiosmosis . In the electron transport chain, the redox reactions are driven by the Gibbs free energy state of the components. Anaerobic respiration is used by some microorganisms in which neither oxygen (aerobic respiration) nor pyruvate derivatives (fermentation) is the high-energy final electron acceptor. What are the 3 steps of aerobic respiration?, What is the role of oxygen in aerobic respiration?, During which step of aerobic respiration is the most ATP produced?, In aerobic respiration, is glucose oxidized or reduced? C) It is given off as a by-product during the oxidation of pyruvate. This method still incorporates the respiratory electron transport chain, but without using oxygen as the terminal electron acceptor. All other trademarks and copyrights are the property of their respective owners. – In aerobic respiration, the final acceptor is oxygen. A) Plays no role B) It combines with acetyl-CoA at the start of the Kreb's Cycle. Both of these processes occur during cell metabolism. Aerobic respiration is an exergonic pathway that requires molecular oxygen (O 2). Compared to aerobic respiration, sulfate reduction is a relatively energetically poor process, though it is a vital mechanism for bacteria and archaea living in oxygen-depleted, sulfate-rich environments. 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