Chemiosmosis is a part of oxidative phosphorylation, the final step in cellular respiration. Which of the following is TRUE regarding chemiosmosis?     ATP synthesis creates a proton gradient that causes electron flow through an electron transport chain (ETC). A temperature gradient drives ATP synthesis. The energy from a proton gradient is used to make ATP. Chemiosmosis regenerates electron carriers like NADH and FADH2.

The complete catabolism of one molecule of C6H12O6 into carbon dioxide and water produces a larger amount of ATP in aerobic prokaryotes than it does in aerobic eukaryotes because aerobic prokaryotes:   always produce ethanol rather than lactic acid as a byproduct generate more molecules of NADH during aerobic respiration have no transport costs to get NADH into mitochondria generate more molecules of FADH2 during aerobic respiration are able to use pyruvate as a substrate for fermentation

Which of the following regarding the Electron Transport Chain is INCORRECT? It can accept electrons from the Glycerol 3-Phosphate Shuttle It sets up the proton motive force Free energy from the exergonic electron flow is coupled to the endergonic transport of protons out of the matrix Electrons flow through electron acceptors/donors from a high reduction potential to a lower reduction potential

Which of the following regarding the ATP Synthase is INCORRECT? Protons flow through the a and c subunits The translocation of four protons through the ATP synthase fuels the synthesis of one ATP molecule The F1 domain can function as an ATPase The y subunit rotates while the xß dimers are stationary

ATP synthase attaches a phosphate group to ADP, forming ATP   .This process requires energy. The energy is provided by electron carrier molecules in the electron transport system that pump ___________into the intermembrane space (also called outer compartment). When these move back into the ___________, they must move through ATP synthase. This movement through ATP synthase provides the power needed by ATP synthase to push the third phosphate group onto ADP.        protons (H+ ions);  mitochondrial matrix    protons; intermembrane space    electrons; intermembrance space   electrons; mitochondrial matrix

Having now learned how to conduct basic cell culture, you are ready to complete your first experiments.  Below is a portion of the respiration pathway in O.Extremus in which electrons are transferred from NADH to O2; the energy of this reaction is coupled to the pumping of H+, and ultimately ATP production. O.Extremus displays abnormally high activity levels of an enzyme called ATPase.  This results in increased hydrolysis of ATP to ADP and later AMP. What effect would this have on the overall metabolic rate in these cells? Explain your reasoning.

Which of the following statements about the aerobic respiration of a molecule of glucose is FALSE? O It requires pathways and membrane complexes in both the cytosol and mitochondria in eukaryotes. O 34 molecules of ATP are generated by oxidative phosphorylation. O It requires pathways and membrane complexes in the cytosol and plasma membrane in prokaryotes. O It can generate 38 molecules of ATP in prokaryotes. O 12 molecules of ATP are generated by substrate-level phosphorylation.

The normal flow of electrons through the electron transport chain is blocked by sodium azide. Which of the following would you predict to occur upon addition of sodium azide to a cell? Halt in pyruvate oxidation and continuation in ATP synthesis Continuation in pyruvate oxidation and halt in ATP synthesis Halt in both pyruvate oxidation and ATP synthesis Continuation in both pyruvate oxidation and ATP synthesis

During cellular respiration, which of the following diffuses through ATP synthase? O Phosphates O Protons (H* ions) O ATP O Electrons O Carbon dioxide (CO2)

The complete catabolism of glucose into CO2 and H2O generally yields a smaller amount of ATP in aerobic eukaryotes than in aerobic prokaryotes because the aerobic eukaryotes: generate more molecules of FADH2 during aerobic respiration have transport costs to get NADH into the mitochondrion generate more molecules of NADH during aerobic respiration are able to use pyruvate as a substrate for fermentation always produce ethanol rather than lactic acid as a byproduct