[Answer] The final electron acceptor of cellular respiration is _____.

Answer: NADH and FADH2; inter-membrane space

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The final electron acceptor of cellular respiration is _____. An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element. Every solid liquid gas and plasma is composed of neutral or ionized atoms. Atoms are extremely small; typical sizes are around 100 picometers (1×10⁻¹⁰ m a ten-millionth of a millimeter or 1/254 000 000 of an inch)… c . during the electron transfer steps of oxidative phosphorylation d. when oxygen acquires electrons and protons at the end of the electron transport chain b . in the reaction that creates acetyl CoA … Thu Apr 21 2016 · In aerobic respiration the final electron acceptor is molecular oxygen O2 . With anaerobic respiration the final electron acceptor is a molecule other than oxygen such as an organic substance. There are two important microbial methane formation pathways through Carbonate (CO${\displaystyle _{3}-}$) reduction (respiration) and acetate fermentation. Cellular respiration (both aerobic and anaerobic) utilizes highly reduced chemical compounds such as NADH and FADH2 (for example produced during glycolysis and the citric acid cycle) to establish an electrochemical gradient (often a proton gradient) across a membrane. This results in an electrical potential or ion concentration difference across the membrane. The r… There are two important microbial methane formation pathways through Carbonate (CO${\displaystyle _{3}-}$) reduction (respiration) and acetate fermentation. Cellular respiration (both aerobic and anaerobic) utilizes highly reduced chemical compounds such as NADH and FADH2 (for example produced during glycolysis and the citric acid cycle) to establish an electrochemical gradient (often a proton gradient) across a membrane. This results in an electrical potential or ion concentration difference across the membrane. The reduced chemical compounds are oxidized by a series of respiratory integral membrane proteins with sequentially increasing reduction potentials with the final electron acceptor being Oxygen (in aerobic respiration) or another chemical substance (in anaerobic respiration). A proton motive force drives protons down the gradient (across the membrane) through the proton channel of ATP synthase. The resulting current drives ATP synthesis from ADP and inorganic phosphate. Fermentation in contrast does not utilize an electrochemical gradient. Fermentation instead only uses substrate-level phosphorylation to produce ATP. The electron acceptor NAD+ is regenerated from NADH formed in oxidative steps of the fermentation pathway by the reduction of oxidized compounds. These oxidized compounds are often formed during the fermentation pathway itself but may also be external. For example in homofermentative lactic acid bacteria NADH formed during the oxidation of glyceraldehyde-3-phosphate is oxidized back to NAD+ by the reduction of pyruvate to lactic acid at a later stage in the pathway. In yeast acetaldehyde is reduced to ethanol to regenerate NAD+. The two processes thus generate ATP in very different ways and the terms should not be treated as synonyms. Originally Answered: What is the final electron acceptor in cellular respiration? Oxygen ( O2 ) because of its highly electronegative nature drives aerobic respiration by drawing electrons ( e -) of the lowest energy from the electron transport chain being reduced itself to water (H2O) in the reaction. 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 t...

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