Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 9.4, Problem 3CC
MAKE CONNECTIONS Ø Membranes must be fluid to function properly (as you learned in Concept 7.1) How does the operation of the electron transport chain support that assertion?
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Describe the role of each of the membrane proteins shown in the picture below. Think about what is happening to the electrons and describe how energy is transformed as electrons move along the chain. Part of this involves the formation of the proton gradient. The other part is the explanation of the energetics of electron transport that you investigated above. In other words, the reason that electrons always flow from complex I to complex III to complex IV to oxygen.
Chapter 9 Solutions
Campbell Biology
Ch. 9.1 - Compare and contrast aerobic and anaerobic...Ch. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - Prob. 3CCCh. 9.4 - Prob. 1CCCh. 9.4 - WHAT IF? In the absence of O2 as in question 1,...Ch. 9.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 9.5 - Consider the NADH formed during glycolysis. What...
Ch. 9.5 - WHAT IF? A glucose-fed yeast cell is moved from...Ch. 9.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 9.6 - Prob. 2CCCh. 9.6 - Prob. 3CCCh. 9.6 - Prob. 4CCCh. 9 - Describe the difference between the two processes...Ch. 9 - Which reactions in glycolysis are the source of...Ch. 9 - What molecular products indicate the complete...Ch. 9 - Briefly explain the mechanism by which ATP...Ch. 9 - Prob. 9.5CRCh. 9 - Prob. 9.6CRCh. 9 - Level 1: Knowledge/Comprehension 1. The immediate...Ch. 9 - Prob. 2TYUCh. 9 - Prob. 3TYUCh. 9 - Prob. 4TYUCh. 9 - What is the oxidizing agent in the following...Ch. 9 - When electrons flow along the electron transport...Ch. 9 - Prob. 7TYUCh. 9 - Prob. 8TYUCh. 9 - Prob. 9TYUCh. 9 - Prob. 10TYUCh. 9 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 9 - DRAW IT The graph here shows the pH difference...Ch. 9 - EVOLUTION CONNECTION AIP synthases are found in...Ch. 9 - SCIENTIFIC INQUIRY In the 1930s, some physicians...Ch. 9 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Coenzyme Q (CoQ) is sold...
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- 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?arrow_forwardWhile holding your hand on your ribs, take a deep breath and observe how much your chest expands. How you would have to breathe at higher altitudes to achieve the same effect? You would have to take slow, shorter breaths to take in the same number of air mo- lecules to achieve the same expansion. You would have to breathe exactly the same to take in the same number of air molecules to achieve the same expansion. You would have to breathe deeper to take in the same number of air molecules to achieve the same expansion. You would have to take fast, shallow breaths to take in enough air molecules to get the same expansion.arrow_forwarda) At the organelle/molecular level inside a mitochondrion, wWhy do cells engaged in aerobic cellular respiration need O2? At what points during aerobic cellular resp is CO2 released? b) O2 and CO2 do not dissolve in water easily but cells must be moist to have functional phospholipid bilayers. For air breathers, moist lungs might collapse and stick together so what prevents this? c) Aquatic animals contend with the relatively lower O2 levels in water, but at least they don’t have to deal with ventilating lung. Complex gills like in fish maximize O2 exchange with a counter-current system ensuring there is always a gradient between the water and the blood. How does this ensure there is always a gradient between the water and the blood? (many people mix this up so think carefully)arrow_forward
- Fill in the blank: Addition of electron(s) to a substance is the process of (1). Removal of electron(s) from a substance is the process of (2). In terms of moving the electrons from one substance to another, electron carriers that are (3) or are (4) can be employed. Bacteria can have electrons move along the (5) membrane. (6) move each electron to stronger and stronger electron acceptors in the membrane. Ultimately, the electron will be added to (7) to generate water. Meanwhile, the protons generated during all this electron transfer are transported back across the membrane to form (8).arrow_forwardThe following diagrams illustrate the two aqueous spaces and the inner membrane of a mitochondrion. In which diagram is the relative concentration of protons auch that ATP synthesis could occur if ATP synthase were present? (Gold spheres represent protons.) 圈圈圈圈圈 A B D E OA OB OC OD OE intermembrane space Anner membrane matriearrow_forwardrgy Conversions ite / Unit 2 - The Cell anaeroblc respiration 11) To complete this Venn Diagram, label the following differences and similarities as A (aerobic), B (common to both) or C (anaerobic). with oxygen 2 ATP B convert energy 38 ATP Aerobic Respiration Anaerobic Respiration without oxygen W 12) Matching.arrow_forward
- MON TRANSPORT CHAIN Intermembrane Space 3 ACP Mitochondrial Matrix FADH FAD Copyrighs 0200n Benmin Cummings an impii s Addson identify the importance to keep the electrons (e-) running through the electron transport chain. The electrons move to and join with ADP to form ATP Electron movement causes the body to take in axygen. The electrons will flow through ATP Synthase in order to make ATP The energy of the moving electrons will power the transport of H+ to the intermembrane space. Next Previous 00arrow_forwardEVOLUTION CONNECTION ATP synthases are found in theprokaryotic plasma membrane and in mitochondria andchloroplasts. (a) Propose a hypothesis to account for anevolutionary relationship of these eukaryotic organelles andprokaryotes. (b) Explain how the amino acid sequences ofthe ATP synthases from the different sources could be usedto support or refute your hypothesis.arrow_forward(3) Chloroplast (D) Cellulose (C) Golgi Bodies The major biomolecular responsible for uptake of material across the plasma membrane is: (A) Carbohydrate (C) Protein Phospholipid with unsaturated fatty acid tail, make the membranes: (A) More fluid (C) The statement is incomplete Smooth endoplasmic reticulum makes: (A) Enzymes (C) Sugar The face of the golgi bodies towards the nucleus is called: (A) Dictyosome (C) Trans phase Microvillae are also called: (A) Leaf veins (C) Capillaries Plant cells synthesized sugar in the: (A) Grana (C) Thylakoid The amount of DNA in mammal cells: Q.2 (B) lipid (D) Phospholipid Q.3 (B) Less fluid (D) None of these Q.4 (B) Protein (D) Lipid Q.5 (B) Cis-phase (D) Both B and C Q.6 (B) Cristae (D) None of these Q.7 (B) Stroma (D) Cristae Q.8 (A) 5% (C) 0.25% The most abundant biomolecules on the earth is: (A) Nucleic acid (C) Carbohydrate 10 molecules of glucose require ATP: (A) 70 (C) 90 Bacteria used by Griffith in 1928: (A) Monotrichous (C) Amphitrichous…arrow_forward
- 21. The heart of Peter Mitchell’s theory of chemiosmosis implies that the connection betweenelectron transport and the synthesis of ATP is indirect. Explain this statement.arrow_forwardIntermembrane Space Protein Complex of Electron H Carriers ATP Synthase Cyt C NADH NAD FADH FAD 2H + ,0, H,0 Mitochondrial Matrix ADP+ ATP Electron Transport Chain Chemiosmosis Oxidative Phosphorylation 19- 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? 20. Because they lose their mitochondria during development, red blood cells cannot perform aerobic respiration; however, they do perform glycolysis in the cytoplasm. Why do all cells need an energy source, and what would happen if glycolysis were blocked in a red blood cell? 21. What is the primary difference between a circular pathway and a linear pathway? 22. How do the roles of ubiquinone and cytochrome c differ from the roles of the other components of the electron transport chain? 23. What accounts for the different number of ATP molecules…arrow_forward6) Pore-forming toxins are a class of protein-based toxic polymers that result in the formation of large multi-protein channels that allow the free flow of substrates and liquid in and out of a cell or organelle. Research shows that these can attach to the outer mitochondrial membrane, or on the thylakoid membranes Hollyal of chloroplasts. Meman Extracelular binding space Proteiniciati Inactive soluble T obare Lipid Activation Active P Assembly Membrane tion Pelit K Partially formed pome Nunta Inson Large molecule A Protein What would the possible consequences be if this pore-forming toxin attached to the mitochondrial outer membrane or the thylakoid membrane? Explain why. ATP Nature Reviews Microbiologyarrow_forward
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