Oxidative phosphorylation is a two-stage process where ATP synthase couples the electron transport chain to ATP synthesis. In the first part, energy stored in reduced electron carriers is extracted via a series of redox reactions to drive ADP phosphorylation in the second stage, known as chemiosmosis. Select one: The above statement is TRUE. The above statement is FALSE.

Oxidative phosphorylation is a two-stage process where ATP synthase couples the electron transport chain to ATP synthesis. In the first part, energy stored in reduced electron carriers is extracted via a series of redox reactions to drive ADP phosphorylation in the second stage, known as chemiosmosis. Select one: The above statement is TRUE. The above statement is FALSE.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter7: Releasing Chemical Energy

Section: Chapter Questions

Problem 11SA

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Which of the following statements is correct? a. Glycolysis and Krebs cycle produce ATP in substrate level phosphorylation b. Glycolysis and Krebs cycle produce ATP in oxidative level phosphorylation. c. Glycolysis and pyruvate oxidation produce ATP in substrate level phosphorylation. d. Glycolysis and pyruvate oxidation produce ATP in oxidative level phosphorylation.
Which of the following statements concerning oxidative phosphorylation is false? Group of answer choices: The electron transport chain generates an electrochemical gradient that drives the production of ATP. ATP synthase with fewer subunits in its c ring will produce more ATP per proton. A “loose” β subunit of ATP synthase becomes a “tight” site as it produces ATP. When the supply of NADH and QH2 (ubiquinol) decreases, ATP synthase produces more ATP.
The complete aerobic respiration of glucose yields far more energy stored in ATP than glycolysis alone for all of the following reasons EXCEPT: Krebs cycle generates reduced electron carrier molecules (NADH and FADH2) Krebs cycle generates some additional ATP through substrate-level phosphorylation Glycolysis only partially oxidizes the glucose molecule to pyruvic acid None of the other four answers (all are reasons that aerobic respiration yields more energy than glycolysis alone) Electron transport chain (terminal respiratory pathway) produces many ATPs through oxidative phosphorylation using electron carrier molecules (NADH and FADH2)
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
For the theoretical maximum yield of ATP per glucose molecule oxidized by aerobic respiration, we will assume that for each pair of electrons transferred to the electron transport chain by NADH, 3 ATP will be generated; for each electron pair transferred by FADH2, 2 ATP will be generated. If NADH is produced in the cytoplasm, it will only generate 2 ATP but NADH produced in the mitochondria will release 3 ATP. How many molecules of ATP are produced when 10 molecules of NADH formed during the Krebs cycle enter the electron transport chain?
For the theoretical maximum yield of ATP per glucose molecule oxidized by aerobic respiration, we will assume that for each pair of electrons transferred to the electron transport chain by NADH, 3 ATP will be generated; for each electron pair transferred by FADH2, 2 ATP will be generated. If NADH is produced in the cytoplasm, it will only generate 2 ATP but NADH produced in the mitochondria will release 3 ATP. How many molecules of ATP are produced when 10 molecules of FADH2 enter the electron transport chain?
Discuss why the electron transport chain ceases to operate when actively respiring mitochondria are exposed to an inhibitor of ATP Synthase. Name several specific inhibitors of ATP synthase. How do those inhibitors inhibit ATP synthase? What is the thermodynamic result of this inhibition? Why does the inhibition of the synthase cause inhibition of the ETS?
Indicate at what step in the glycolysis pathway each of the following events occur 1. First phosphorylation of ADP occurs 2. First “energy rich” compound is produced 3. Second “energy rich” compound undergoes reaction 4. First isomerization reaction occurs 5. Second formation of ATP occurs 6. Second “energy rich” compound is produced 7. ATP is converted to ADP for the second time 8. A dehydration reaction occurs
For the theoretical maximum yield of ATP per glucose molecule oxidized by aerobic respiration, we will assume that for each pair of electrons transferred to the electron transport chain by NADH, 3 ATP will be generated; for each electron pair transferred by FADH2, 2 ATP will be generated. If NADH is produced in the cytoplasm, it will only generate 2 ATP but NADH produced in the mitochondria will release 3 ATP. In a complete breakdown of a molecule of glucose, how many molecules of NADH had been produced?
For the theoretical maximum yield of ATP per glucose molecule oxidized by aerobic respiration, we will assume that for each pair of electrons transferred to the electron transport chain by NADH, 3 ATP will be generated; for each electron pair transferred by FADH2, 2 ATP will be generated. If NADH is produced in the cytoplasm, it will only generate 2 ATP but NADH produced in the mitochondria will release 3 ATP. How many molecules of ATP may be produced when 8 molecules of NADH from glycolysis enter the electron transport chain? *
In which step of glycolysis does each of the following occurs? second substrate-level phosphorylation reaction first ATP-consuming reaction third isomerization reaction use of NAD+ as an OA
Which of the following events occurs during the energy-payoff phase of glycolysis? One carbon of a pyruvate molecule is oxidized to carbon dioxide. Oxaloacetate receives a two-carbon acetyl group from acetyl coenzyme A to form citrate. Substrate-level phosphorylation Oxidative Phosphorylation In which stage of aerobic cellular respiration are FADH2 molecules produced? Pyruvate Oxidation Glycolysis Krebs Cycle Electron Transport Which of the following events does not occur during pyruvate processing (pyruvate oxidation)? One carbon atom of each pyruvate is oxidized to carbon dioxide. NAD+ coenzyme is reduced to NADH. The remaining two carbon atoms of pyruvate (acetyl unit) reacts with coenzyme A to produce acetyl CoA. FAD coenzyme receives two hydrogen atoms to produce FADH2.