The combined processes of electron and H+ transport and subsequent ATP synthesis
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CHOOSE THE CORRECT LETTER
- The combined processes of electron and H+ transport and subsequent ATP synthesis is called which of the following?
A. oxidative phosphorylation
B. photophosphorylation
C. substrate level phosphorylation
D. cellular phosphorylation
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- For each of the statements below, indicate whether they are true or false and then in detail explain why the false statements are incorrect, making reference to the relevant cell processes and/or molecules. A. In cellular respiration the ETC transfers electrons via redox reactions whereas in photosynthesis the ETC transfers electrons using light. B. In cellular respiration the ETC creates a proton gradient with the higher concentration on the outer side of the inner membrane whereas in photosynthesis the ETC creates a proton gradient with the higher concentration on the inner side of the thylakoid membrane. C. In cellular respiration the ETC gradient is used to power ATP production by oxidative phosphorylation whereas in photosynthesis the ETC gradient is used to power ATP production by substrate level phosphorylation.Which of the following statements concerning ATP synthesis is NOT true? a. The open conformation of the ATP synthase is for releasing ATP. b. The gamma subunit in the stalk responds to the flow of H+ and rotates the assembly counterclockwise and thus change the conformations of the active site to synthesize ATP. c. The tight conformation of the ATP synthase is for converting ADP and phosphate to ATP. d. The loose conformation of the ATP synthase is for binding ADP and phosphate. e. Ten protons are required to catalyze the rotation of the subunits so that one ATP is synthesized. Clear my choiceCHOOSE THE CORRECT LETTER Which of the following conditions promote the synthesis of ATP through the electron transport chain?A.proton pump from outer mitochondrial membrane to inner mitochondrial membraneB. proton pump from matrix to inner mitochondrial membraneC. proton pump from inner mitochondrial membrane to outer mitochondrial membraneD. proton pump from inner mitochondrial membrane to matrix
- Which of the following statements describes the end step for the electron transport chain? A. H+ ions flow down the gradient to generate ATP B. electrons are transferred to NADH and FADH2 for chemiosmosis C. electrons are transferred to oxygen, causing it to split and take up H+ ions, which form water D. H+ are pumped across the inner membrane of mitochondria to establish an electrochemical gradientCHOOSE THE CORRECT LETTER What is the mechanism of ATP synthesis in glycolysis? A. substrate level phosphorylationB. oxidative phosphorylationC. reductionD. oxidationCHOOSE THE CORRECT LETTER What is the mechanism of ATP synthesis in glycolysis?A.oxidative phosphorylationB.substrate level phosphorylationC. reductionD.oxidation
- CHOOSE THE CORRECT LETTER How do the NADH and FADH2 molecules produced from B-oxidation lead to the production of ATP?A. oxidative phosphorylation through the electron transport chainB. substrate phosphorylation through the Kreb's cycleC. they will follow one of the shuttle mechanisms present in the cellD. they are coupled to a redox reactinoYou are studying the process of oxidative phosphorylation in the lab. You isolate several mitochondria from cells and place them in a buffered solution with a low pH and observe that the mitochondria begin to synthesize ATP. Which of the following is the best explanation for this observation? F It increases the conc. of OH-, causing the mitochondria to pump H+ to the intermembrane space. It increases the diffusion of H+ from the mitochondrial matrix to the intermembrane space. It increases the diffusion of H+ from the intermembrane space to the matrix. It increases the conc. of OH- in the mitochondrial matrix.Consider the following diagram when answering the questions about cellular respiration. (a) Label the diagram. (b) Considering the electron transport chain. Why type of cell transport is happening at the ETC? Explain. (c) What type of cell transport is happening at ATP synthase? Explain. B A D E
- CHOOSE THE CORRECT LETTER Which of the following reaction types are NOT found in glycolysis?A. phosphorylationB. reductionC. oxidationD. isomerizationConsider the following diagram when answering the questions about cellular respiration. (a) Label the diagram. (b) Considering the electron transport chain. Why type of cell transport is happening at the ETC? Explain. (c) What type of cell transport is happening at ATP synthase? Explain. B DSteps in oxidative phosphorylation involves all of the following except 11. a. The phosphorylation energy is supplied by ATP metabolism b. Electron transfer chain moves electron from NADH and FADH2 to O2 c. Phosphorylation of ADP to ATP catalyzed by ATP synthase d. Electron do not flow to oxygen unless ATP is needed 12. List factors that can activate glucokinase for glucose metabolism in the liver 13. What are the functions of macromolecules with examples? Write the general balanced equation that shows the catabolism of glucose (GLYCOSLYSIS) to ATPS, carbon dioxide, and water. Include in the equation the formation of ATP from ADP and phosphate and oxygen utilization. 14. 15. What is post-translational processing of proteins and list 3 things that can happen to the proteins synthesized at this stage: