The energy source used to drive Electron Transport Chain (ETC) function is The function of the ETC is O high energy electrons from glucose (or other organic molecules); proton-pumping across a membrane ATP; phosphorylation of ATP to ADP glucose delivered by NAD or FADH2; pumping oxygen across a membrane ATP; pumping water across a membrane

The energy source used to drive Electron Transport Chain (ETC) function is The function of the ETC is O high energy electrons from glucose (or other organic molecules); proton-pumping across a membrane ATP; phosphorylation of ATP to ADP glucose delivered by NAD or FADH2; pumping oxygen across a membrane ATP; pumping water across a membrane

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter21: Photosynthesis

Section: Chapter Questions

Problem 5P: The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If...

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Which of the following statements about oxidative phosphorylation is correct? O H+ ions are transferred from Complex I or Complex II to ATP synthase where ATP production occ O Proton pumps transfer electrons from the cytosol to the mitochondrial matrix as electrons are tra O The chemical and electrical gradient is established between the intermembrane space and the ma electron carriers. O ATP synthase pumps electrons back to the intermembrane space as a consequence of electrocher mitochondrial matrix. • Previous
The role of ATP synthase is and it is located in split glucose; cytosol of cells O shuttle pyruvates into mitochondria; cytosol of cells pass electrons to proteins along the inner mitochondrial membrane;mitochondria O attach ADP and Pi (ie, make ATP); mitochondria
which of the following processes generates a proton-motive force in mitochondira. -lower the ph in the mitochondiral matrix -pumping of hydrogen ions from the mitochondiral matrix across the inner membrane and into intermembrane -the flow of protons throught ATP synthase down their concentraion gradient -the reduction of NAD+ by the first electon carrier in the electron trasport chain
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
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 part of the FoF1 ATP synthase is the pore through which protons (H+) move? the a subunit of the Fo static component the gamma subunit of the F1 mobile component the beta subunits of the F1 static component the c subunits of the Fo mobile component
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 Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)
Dissipation of the proton gradient is required for Formation of ATP from ADP+Pi Overcoming entropy to bring the reactants in close proximity Tight binding of ADP+Pi to the enzyme Release of ATP from ATP synthase
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)
All of the following are involved in oxidative phosphorylation except: proton motive force NADH Cytochromes Acetyl co-enzyme A ATP synthase
Electrons carried via NADH Electrons carried via NADH and FADH ELECTRON TRANSPORT CHAIN AND OXIDATIVE PHOSPHORYLATION GLYCOLYSIS Glucose Pyruvate KREBS CYCLE Cytosol Mitochondrion ATF ynthase ATP ATP ATP Substrate-level phosphorylation Substrate-level phosphorylation Oxidative phosphorylation Copyng C Pearson Eaucaton e p ng RL Elergamen Cummmgs Figure 5. The Process of Cellular Respiration Explain the major events of the celluar respiration based on the given diagram.