C. is a series of redox reactions If the intermembrane space of the mitochondria was increased, I would think that respiration would be less efficient, because now the electrons have to cross a larger space and lose much more energy. In mitochondria, exergonic redox reactions (A) are the source of energy driving prokaryotic ATP synthesis. Glycolysis Is the action/movement of ATP synthase passive or active? B. glycolysis and the oxidation of pyruvate to acetyl CoA A. It takes two electrons, 1/2 O2, and 2 H+ to form one water molecule. Hm. A cell stays small to allow easier transport of molecules and charged particles from organelles. Which of the following molecules can also be used by cellular respiration to generate ATP? Reactions involving electron transfers are known as oxidation-reduction reactions (or redox reactions). D. hydrolyzed, When a molecule of NAD+ (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a proton), the molecule becomes _____. Reducing NAD+ to NADH in glycolysis and the citric acid cycle AND producing a proton gradient for ATP synthesis in the mitochondria. What do you note, qualitatively, about the relative volumes and masses of steam and liquid water required to release the same amount of heat? B. food glycolysis citric acid cycle NADH ATP E. ATP. In mitochondria, exergonic redox reactions a. are the source of energy driving prokaryotic ATP synthesis b. are directly coupled to substrate-level phosphorylation c. provide the energy to establish the proton gradient d. reduce carbon atoms to carbon dioxide e. are coupled via phosphorylated intermediates to endergonic processes A hydrogen atom is transferred to the atom that loses an electron. W2017_Lecture_15_reading - Biology LibreTexts E. The electron transport chain takes electrons from water and gives them to oxygen. Are directly coupled to substrate-level phosphorylation. What happens is that oxygen serves as a final electron acceptor in the oxidative phosphorylation ETC and reduces to H2O, which is a byproduct. This chemical energy helps phosphorylate ADP to produce ATP. D. NADH Energy is released in these downhill electron transfers, and several of the protein complexes use the released energy to pump protons from the mitochondrial matrix to the intermembrane space, forming a proton gradient. A jet touches down on a runway with a speed of 142.4mph142.4 \mathrm{mph}142.4mph. In aerobically respiring eukaryotic cells the ETC is composed of four large, multiprotein complexes embedded in the inner mitochondrial membrane and two small diffusible electron carriers shuttling electrons between them. (C) reduce carbon atoms to carbon dioxide. However it shows no hydrogen in the carboxyl group. ATP synthesis that is powered by the redox reactions that transfer electrons from food to oxygen. D. 2 NAD+, 2 pyruvate, and 2 ATP. It has two important functions: Complexes I, III, and IV of the electron transport chain are proton pumps. Direct link to Justin Riedel's post The bicarbonate buffer sy, Posted 7 years ago. Reactions involving electron transfers are known as, You may have learned in chemistry that a redox reaction is when one molecule loses electrons and is. D. glucose pyruvate ATP oxygen, Where are the proteins of the electron transport chain located? Direct link to Devon Dryer's post What does the structure o, Posted 7 years ago. B. Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis? Substrate-level phosphorylation occurs _____.
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