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What is the role of NAD+ in cellular respiration




What is the role of NAD+ in cellular respiration?;to receive electrons from the citric acid cycle and deliver them to the electron transport chain;to catalyze the synthesis of ATP from ADP;to accumulate in the mitochondrial intermembrane space to facilitate ATP synthesis;to serve as a substrate to bind to acetyl-CoA at the beginning of the citric acid cycle;None of the answers are correct.;2.;How is the energy from the electron transport chain used most directly?;to form the bonds of a water molecule;to pump hydrogen ions across the mitochondrial inner membrane into the mitochondrial intermembrane space;to join ADP with a phosphate;to decompose glucose into pyruvate;to rotate ATP synthase;3.;In the process of alcoholic fermentation, what causes the liquid to bubble?;oxygen;carbon dioxide;nitrogen;alcohol;sugar;4.;Which molecules transport electrons from the citric acid cycle to the electron transport chain?;NADH and FADH2;ATP and ADP;GTP and GDP;oxaloacetate and citric acid;None of the answers are correct.;5.;What causes the ATP synthase rotor to spin?;the passing of electrons through ATP synthase;the movement of protons across the mitochondrial membrane;the movement of electrons across the mitochondrial membrane;the synthesis of ATP from ADP and a phosphate group;None of the answers are correct.;6.;Which process provides the energy needed to pump protons across the mitochondrial membrane during oxidative phosphorylation?;the transfer of electrons in redox reactions;the breakdown of ATP to ADP;the rotation of the ATP synthase rotor;oxidation of isocitrate;None of the answers are correct.;7.;Which biochemical process do aerobic respiration, anaerobic respiration and fermentation all have in common?;glycolysis;citric acid cycle;oxidative phosphorylation;electron transport chain;non-oxygen molecules as final electron acceptors;8.;Which process in oxidative phosphorylation releases energy?;the transfer of electrons in redox reactions;the buildup of H+ ions on one side of the mitochondrial membrane;the rotation of the ATP synthase rotor;the synthesis of ATP from ADP and a phosphate group;All answers are correct.;9.;Which of the following atoms has the highest electronegativity?;sulfur;oxygen;hydrogen;nitrogen;carbon;10.;Suppose a microorganism invades a cell, causing damage to ATP synthase. How would cellular respiration be affected?;Electrons could not be passed down the electron transport chain.;ADP could not be joined with a phosphate to form ATP.;Hydrogen ions could not be pumped into the mitochondrial intermembrane space.;The cell could not release any energy from the glucose molecule.;Glucose could not be broken down into pyruvate.;11.;What is the function of oxidation reactions in the citric acid cycle?;to catalyze ATP synthesis;to release energy from substrate molecules;to oxidize NAD+ to NADH;to break down glucose into pyruvate;All answers are correct.;12.;Which statement regarding facultative anaerobes is true?;They can survive in the presence or absence of oxygen.;They require oxygen to survive.;They require the absence of oxygen to survive.;They cannot metabolize glucose.;They require carbon dioxide to survive.;Additional Requirements;Min Pages: 1;Level of Detail: Only answer needed


Paper#15058 | Written in 18-Jul-2015

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