C. Fermentation is an example of an endergonic reaction; cell respiration is an exergonic reaction D. Substrate-level phosphorylation is unique to fermentation, cell respiration uses oxidative phosphorylation 31. •In cellular respiration, glucose and other organic molecules are broken down in a series of steps •Electrons from organic compounds are usually first transferred to NAD+, a coenzyme •As an electron acceptor, NAD+ functions as an oxidizing agent during cellular respiration •Each NADH (the reduced … Many catabolic biochemical processes, such as glycolysis, the citric acid cycle, and beta oxidation, produce the reduced coenzyme NADH.This coenzyme contains electrons that have a high transfer potential; in other words, they will release a large amount of energy upon oxidation.However, the cell does not release this energy all at once, as this would be an uncontrollable reaction. NADH is the reduced form because it has electrons that were gained from the reduction reaction. Ratio in glucose is 1 carbon to one oxygen Ratio in carbon dioxide is 1 carbon to 2 oxygens. The carbon dioxide accounts for two (conversion of two pyruvate molecules) of the six carbons of the original glucose molecule. Mitochondrial electron transport chains. The electrons are picked up by NAD +, and the NADH carries the electrons to a later pathway for ATP production. oxidation reactions remove electrons and H+ at same time; Overall picture of respiration glucose is oxidized to CO 2 and the potential energy is captured by the cell; as glucose is oxidized, the electrons are used to reduce an electron carrier, NAD+, to NADH; NADH is oxidized by an electron transport chain, resulting in a H+ gradient At this point, the glucose molecule that originally entered cellular respiration has been completely oxidized. NADH is the reduced form of NAD (nicotinamide adenine dinucleotide), which is a crucial coenzyme involved in the transfer of energy between biochemical reactions that occur in the cell. Cellular Respiration and Adenosine Triphosphate (ATP) Cellular respiration can be defined generally as the process by which chemical energy is released during the oxidation of organic molecules. Oxidation is the process of removing electrons from molecules. Answer to: Why is NADH oxidized by lactate dehydrogenase in anaerobic conditions? Glucose is oxidized in respiration because the electrons are given to NAD+ and FAD 11. NEET 2018: What is the role of NAD+ in cellular respiration ? 9. (A) It is the final electron acceptor for anaerobic respiration. What is NADH. 10. Most eukaryotic cells have mitochondria, which produce ATP from products of the citric acid cycle, fatty acid oxidation, and amino acid oxidation.At the inner mitochondrial membrane, electrons from NADH and FADH 2 pass through the electron transport chain to oxygen, which is reduced to water. (B) It functions as an Cellular respiration is the process of oxidizing organic molecules to produce ATP used to do biological work. "NAD"^+ and "FADH" are being reduced and later oxidezed. If it requires oxygen it is called aerobic respiration, whereas if it takes place in the absence of oxygen it is anaerobic respiration. Cellular Respiration, Coenzymes, FAD, FADH 2, NAD, NADH, Oxidative Phosphorylation. A NAD+ is reduced only in cellular respiration B. NADH is oxidized by the electron transport chain in cell respiration only. The molecule they receive the electrons from are being oxidized. Dioxide accounts for two ( conversion of two pyruvate molecules ) of six. 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