Campbell Biology: Concepts & Connections, 9e, Access Code
9th Edition
ISBN: 9780134536262
Author: Taylor
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 7TYK
The poison cyanide binds to an electron carrier within the electron transport chain and blocks the movement of electrons. When this happens, glycolysis and the citric acid cycle soon grind to a halt as well. Why do you think these other two stages of
a. They run out of ATP.
b. Unused O2 interferes with cellular respiration.
c. They run out of NAD+ and FAD.
d. Electrons are no longer available.
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Which of the following statements about aerobic respiration is true?
a.
Oxygen is the final electron acceptor in the citric acid cycle.
b.
Coenzyme-A is a substrate in the reaction that generates a key reactant for the citric acid cycle.
c.
Redox reactions occur in the electron transport chain (ETC), but not during the citric acid cycle and not during glycolysis.
d.
The citric acid cycle is the main ATP producer in aerobic respiration.
Which of the following statements concerning the location of the metabolic pathways is correct?
a.
All reactions of the glycolysis take place in the mitochondria.
b.
All reactions of the TCA cycle take place in the mitochondria.
c.
Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria.
d.
Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.
Which of the following statements concerning ATP synthesis in mitochondria is FALSE?
a. interruption of the flow of electrons from NADH to oxygen would decrease ATP synthesis
b. making the inner mitochondrial membrane permeable to H+ would decrease ATP synthesis
c. the energy liberated by the electron-transport chain is used to pump H+ ions into the IM-space
d. the movement of H+ through a special channel enzyme (synthase) results in ATP synthesis
e. when protons move from the matrix to the IM-space, ATP is made from ADP + Pi
Chapter 6 Solutions
Campbell Biology: Concepts & Connections, 9e, Access Code
Ch. 6 - Fill in the blanks in this summary map to help you...Ch. 6 - A biochemist wanted to study how various...Ch. 6 - In glycolysis, _____ is oxidized and _____ is...Ch. 6 - Most of the CO2 from cellular respiration is...Ch. 6 - Which of the following is the most immediate...Ch. 6 - Which of the following is a true distinction...Ch. 6 - The poison cyanide binds to an electron carrier...Ch. 6 - In which of the following is the first molecule...Ch. 6 - Which of the three stages of cellular respiration...Ch. 6 - Compare and contrast fermentation as it occurs in...
Ch. 6 - Prob. 11TYKCh. 6 - Prob. 12TYKCh. 6 - Prob. 13TYKCh. 6 - Oxidative phosphorylation involves the flow of...Ch. 6 - In the citric acid cycle, an enzyme oxidizes...Ch. 6 - ATP synthase enzymes are found in the prokaryotic...Ch. 6 - Prob. 17TYKCh. 6 - For a short time in the 1930s, some physicians...Ch. 6 - Explain how the mechanism of brown fat metabolism...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Place the following steps of cellular respiration in the correct order by numbering them from 1 to 4. a. The Krebs cycle produces the energy carriers NADH, FADH2, and ATP. b. If oxygen levels are adequate, pyruvate is transported into the mitochondrion. If oxygen levels are very low, fermentation proceeds. c. Glucose is broken down to produce ATP and NADH. d. An electron transport chain produces ATP from ADP.arrow_forwardWhich of the following on the transport processes across the inner mitochondria membrane is FALSE? a. The functions of the inner mitochondria membrane shuttle proteins do not cost energy. b. The import of ADP into the mitochondria is always coupled to the export of ATP. c. In heart and liver, NADH transport to the mitochondria requires the TCA cycle enzyme malate dehydrogenase. d. In muscle, the glycerol 3-phosphate shuttle transports cytoplasmic NADH to the mitochondria as FADH .arrow_forwardWhich 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 choicearrow_forward
- During oxidative phosphorylation, the proton motive force that is generated by electron transport is used to: a. Generate the substrates (ADP and Pi) for the ATP synthase. b. Create a pore in the inner mitochondrial membrane. c. Oxidize NADH to NAD+. d. Induce a conformational change in the ATP synthase.arrow_forwardWhich of the following statements is TRUE of the electron transport chain (ETC)? A. The movement of electrons down the ETC drives the formation of a proton (H+) gradient. B. The movement of H+ ions through ATP synthase drives the transfer of electrons down the ETC. C. The movement of electrons down the ETC drives the movement of ADP and phosphate through ATP synthase. D. The movement of H+ ions across the inner membrane of the mitochondria drives the transfer of electrons down the ETC.arrow_forwardWhich of the following statements is MOST ACCURATE? A. The oxidation of NADH in the mitochondrial matrix results in the transfer of 1 electron to the electron transport chain. B. The reduction of NADH in the mitochondrial matrix results in the transfer of 1 electron to the electron transport chain. C. The reduction of NADH in the mitochondrial matrix results in the transfer of 2 electrons to the electron transport chain. D. The oxidation of NADH in the cytoplasm results in the transfer of 1 electron to the electron transport chain. E. The oxidation of NADH in the mitochondrial matrix results in the transfer of 2 electrons to the electron transport chain.arrow_forward
- Compare ATP production in the citric acid cycle to the electron transport chain, or aerobic respiration. A. Both processes use oxidative phosphorylation. B. Both processes use substrate-level phosphorylation. C. The citric acid cycle uses substrate-level phosphorylation, and the electron transport chain uses oxidative phosphorylation. D. The citric acid cycle uses oxidative phosphorylation, and the electron transport chain uses substrate-level phosphorylation.arrow_forwardWhich of the following statements is NOT true about Krebs Cycle? a. Krebs cycle is composed of 8-step enzymatic reactions. b. For every CO2 released in the cycle, NADH is produced. c. Succinyl-CoA allows the phosphorylation of GDP (Guanosine Diphosphate) d. The carbon atoms from the glucose that enters the cycle are released from the mitochondrion immediately.arrow_forwardWhich of the following statements is NOT true about the electron transport chain (ETC) and oxidative phosphorylation? A. Oxidative phosphorylation requires the enzyme complexes to be soluble in the mitochondrial matrix. B. If the proton gradient is too high, electrons will not move through the ETC. C. The movement of electrons down the ETC only happens if protons are pumped out of the mitochondrial matrix. D. Oxidative phosphorylation requires the mitochondrial intermembrane space to be more positively charged than the matrix. E. The free energy of the proton gradient can be used to create high energy bonds.arrow_forward
- 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: A. always produce ethanol rather than lactic acid as a byproduct B. generate more molecules of NADH during aerobic respiration C. have no transport costs to get NADH into mitochondria D. generate more molecules of FADH2 during aerobic respiration E. are able to use pyruvate as a substrate for fermentationarrow_forwardATP production during the Electron Transport Chain is driven by which of the following? A. Movement of H+ ions across mitochondrial membranes via ATP synthase B. Movement of electrons down a gradient of charge C. Oxygen accepting H+ ions D. NADH and FADH2 donating phosphate to ADP E. Release of CO2arrow_forwardWhich 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.arrow_forward
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