Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 7, Problem 2VCQ
Figure 7.12 Cyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If cyanide poisoning occurs, would you expect the pH of the intermembrane space to increase or
decrease? What effect would cyanide have on ATP synthesis?
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Chapter 7 Solutions
Biology 2e
Ch. 7 - Figure 7.11 Dinitrophenol (DNP) is an "uncoupler"...Ch. 7 - Figure 7.12 Cyanide inhibits cytochrome c oxidase,...Ch. 7 - (Figure 7.14) Tremetol, a metabolic poison found...Ch. 7 - The energy currency used by cells is ATP ADP AMP...Ch. 7 - A reducing chemical reaction. reduces the compound...Ch. 7 - During the second half of glycolysis, what occurs?...Ch. 7 - What is removed from pyruvate during its...Ch. 7 - What do the electrons added to NAD+ do? They...Ch. 7 - GTP or ATP is produced during the conversion of...Ch. 7 - How many NADU molecules are produced on each turn...
Ch. 7 - What compound receives elections from NADH? FMN...Ch. 7 - Chemiosmosis involves. the movement of electrons...Ch. 7 - Which of the following fermentation methods can...Ch. 7 - A major connection for sugars in glycolysis is...Ch. 7 - Beta-oxidation is. the breakdown of sugars the...Ch. 7 - The effect of high levels of ADP is to__inv __...Ch. 7 - The control of which enzyme exerts the most...Ch. 7 - Why is it beneficial for cells to use ATP rather...Ch. 7 - Nearly all organisms on Earth carry out some form...Ch. 7 - Because they lose their mitochondria during...Ch. 7 - What is the primary difference between a circular...Ch. 7 - How do the roles of ubiquinone and cytochrome c...Ch. 7 - What accounts for the different number of ATP...Ch. 7 - What is the primary difference between...Ch. 7 - Would you describe metabolic pathways as...Ch. 7 - How does citrate from the citric acid cycle affect...Ch. 7 - Why might negative feedback mechanisms be more...
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- Figure 7.11 Dinitrophenol (DNP) is an "uncoupler" that makes the inner mitochondrial membrane "leaky" to protons. It was used until 1938 as a weight-loss drug. What effect would you expect DNP to have on the change in pH across the inner mitochondrial membrane? Why do you think this might be an effective weight-loss drug?arrow_forwardWhich 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 gradientarrow_forwardIn the absence of oxygen, the cell's ability to convert glucose into ATP isarrow_forward
- As electrons move from Complex I & II to Complex IV, H+ ions accumulate in the intermembrane space. Describe how these ions are then used to generate ATP using the following terms: ATP synthase, ADP, ATP, electrochemical gradient, chemiosmosis, intermembrane space, matrix.arrow_forwardWhich of the following molecules remains oxidized when the electron transport inhibitor antimycin A is added to a suspension of actively respiring mitochondria? a. cytochrome c b. NAD c. cytochrome a d. UQarrow_forwardIn cellular respiration, why does it have to be multiple steps in order to get glucose/ATP rather than in just one major step? Explain in no less than 7 sentencesarrow_forward
- What important event occurs during the electron transport chain in aerobic cellular respiration? a) Acetyl CoA combines with a four carbon molecule to form citric acid. b) NADH is formed. c) ATP is formed. d) Glucose is cut into two three-carbon moleculesarrow_forwardWhich of the following processes will result in a direct net increase of ATP concentration? Group of answer choices Anabolic chemical pathways Primary Active transport dehydration synthesis Glycolysisarrow_forwardWhich of the following is NOT true of the electron transport chain? a. It produces NADH, as a result of electrons being transferred from glucose to NAD+ b. End products include CO2, water, and pyruvate c. It allows for the controlled release of energy for ATP synthesis d. It is part of the oxidative phosphorylation processarrow_forward
- Which of the following statements about the generation of ATP in the electron transport chain is correct? a. The generation of ATP from ADP coupled to electron transfer occurs by substrate level phosphorylation as in glycolysis. b. ATP synthase generation of ATP involves a rotating structure inside the inner mitochondrial membrane. c. ATP synthase generation of ATP involves a rotating structure outside the inner mitochondrial membrane. d. Electron transport generates a proton gradient across the outer mitochondrial membrane.arrow_forwardWhich of the following electron-transport chain complexes is not a member of the respirasome? a. Complex I b. Complex II c. Complex III d. Complex IVarrow_forwardThe following chemicals are involved in electron transport. Which of these chemicals has the strongest pull on electrons? a. NADH b. FADH2 c. O2 d. Ubiquinonearrow_forward
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