[References] re the roles of NADH and FADH2 in the production of energy for the cell? DH is oxidized to FAD during electron transport, that then leads to the production of ATP. DH is reduced to FADH¯ during electron transport, that then leads to the production of ATP. DH and FADH, are reduced to NAD¯ and FADH during electron transport, that then leads to the production of AT DH and FADH2 are oxidized to NAD* and FAD during electron transport, that then leads to the production of ATP. mit Answer Try Another Version 1 item attempt remaining

[References] re the roles of NADH and FADH2 in the production of energy for the cell? DH is oxidized to FAD during electron transport, that then leads to the production of ATP. DH is reduced to FADH¯ during electron transport, that then leads to the production of ATP. DH and FADH, are reduced to NAD¯ and FADH during electron transport, that then leads to the production of AT DH and FADH2 are oxidized to NAD* and FAD during electron transport, that then leads to the production of ATP. mit Answer Try Another Version 1 item attempt remaining

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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consider 15 NADH and 43 FADH2 molecules funneling electrons into the electron transport chain coupled to oxidative phosphorylation 1. the total number of protons (H+) pumped during the oxidation of 15 NADH molecules is _____. 2. the toal number of protons pumped during the oxidation of 43 FADH2 molecules is _______. 3, the number of ATP molecules produced from the oxidation of 15 NADH molecules is______. 4.the number of ATP molecules produced from the oxidation of 43 FADH2 molecules is______. 5. the net yield from oxidation of 15 NADH and 43 FADH2 molecules is_____.
which of the following woudl decrease the number of atp molecules generated per nadh molecule in the electron transport chain? a. increasing the energy of the electrons nadh transfer to complex I b. reducing the number of protons required by ATP synthase to produce an ATP moelcule c. having nadh transfer its elections to complex III instead of complex I d. increasing the amount of oxygen available to the cell
Which of the following statements about FAD is FALSE? a. More ATP is produced from the high-energy electrons carried by FADH2 than from those of NADH b. Electrons stored in FADH2 are used in oxidative phosphorylation c. FADH2 has more chemical potential energy than FAD d. FADH2 enters the electron transport chain at Complex 2 e. FAD is reduced into FADH2 during the Citric Acid Cycle
In mitochondria, the electron transport chain converts energy stored in NADH and FADH2 into a: a. Gradient of electrons between the matrix and the intermembrane space b. Gradient of protons between the matrix and the intermembrane space c. Flux of ATP between the cytoplasm and the matrix d. Gradient of neutrons between the matrix and the cytoplasm e. Flux of ADP through substrate cycling The theoretical ATP yield from the complete oxidation of 1 mole of glucose via glycolysis, the TCA cycle and the electron transport chain is higher in a heart cell compared to a skeletal muscle cell because: a. O2 availability is different in the different cell types b. Heart cells are more metabolically active c. The TCA cycle generates more NADH in a heart cell d. Skeletal muscle cells are less energy dense e. Different mitochondrial shuttles operating in the two tissues
Figures A and B show ion H+ flow across membranes and ATP generation through membrane-bound ATP synthase. Which of the following best describes the specific gradients driving ATP synthesis in figures A and B? Figure A shows the proton gradient during oxidative phosphorylation in mitochondria, while figure B shows the proton gradient during photophosphorylation in chloroplasts. Figure A shows the NAD+ gradient during oxidative phosphorylation in mitochondria, while figure B shows the NADPH gradient during photophosphorylation in chloroplasts. Figure A shows the NAD+ gradient during the Krebs cycle and chemiosmosis in mitochondria, while figure B shows the NADPH gradient during the Calvin cycle and chemiosmosis in chloroplasts. Figure A shows the proton gradient during the Krebs cycle and chemiosmosis in mitochondria, while figure B shows the proton gradient during the Calvin cycle and chemiosmosis in chloroplasts.
Which of the following statements about the use the NADPH generated from the pentose phosphate pathway is not true? NADPH generated from the pentose phosphate pathway is used for the synthesis of fatty acids. b. NADPH generated from the pentose phosphate pathway and cytoplasmic NADH is metabolically interchangeable. O c. NADPH generated from the pentose phosphate pathway is used for the regeneration of glutathione to its reduced state. O d. NADPH generated from the pentose phosphate pathway is used for lipid synthesis. Clear my choice
Briefly, explain why the transfer of electrons from NADH to the ETC results in the production of more ATP molecules than are produced as a result of the transfer of electrons from FADH2? Don't copy from Google
In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + Pi to ATP? A. No external source of energy is required because the reaction is exergonic. B. energy released from high energy electrons given by NADH and FADH2 C. energy released from ATP synthase pumping hydrogen ions from the mitochondrial matrix D. energy released as electrons flow through the electron transport system E. energy released from movement of protons through ATP synthase F. energy released from substrate-level phosphorylation
The conversion of 1 mol of fructose 1,6-bisphosphate to 2 mol of pyruvate by the glycolytic pathway results in a net formation of: a. 1 mol of NAD+ and 2 mol of ATP. b. 1 mol of NADH and 1 mol of ATP. c. 2 mol of NAD+ and 4 mol of ATP. d. 2 mol of NADH and 2 mol of ATP. e. 2 mol of NADH and 4 mol of ATP.
If the cell receives 4 glucose molecules and oxidizes them through aerobic cellular respiration: 5 How many CO2 will be released? How many ATP will be produced by substrate-level phosphorylation? How many NADH will be reduced? How many FADH2 will be reduced? How many ATP will be produced by oxidative 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 choice
How is the energy used to make ATP via the electron transport chain generated? a. The energy from electrons bound to reduced coenzymes is used to create a steep electrochemical gradient. b. Electrons bound to NADH are used to generate a H+ ion gradient across the inner mitochondrial membrane. c. Electrons bound to FADH2 are used to generate a proton gradient across the inner mitochondrial membrane. d. Electrons bound to NADH are used to generate a proton gradient across the inner mitochondrial membrane. e. All of these are correct.