Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 14.5, Problem 1TQ
Summary Introduction
To review:
The pathway for the reverse electron flow in an organism that spends ATP from fermentation to form NADH.
Introduction:
The electron transport system (ETS) is the last pathway involved in the
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Use drawings, flow charts, or a table to compare and contrast the energy inputs and outputs during each phase of aerobic respiration vs. fermentation. Be sure to directly discuss inputs and outputs of BOTH processes. Include all phosphorylated compounds and high-energy electron carriers, and briefly EXPLAIN HOW these are produced at each stage of respiration. WHERE does each stage happen? Explain HOW energy from high energy electron carriers is converted to ATP during respiration in mitochondria or aerobic bacteria.
Consider how the Hill Reaction might be used to investigate how the wavelength of light influences the rate electrons move in the electron transport chain of the chloroplast.
a) Design an experiment to compare the effects of blue light and green light on the Hill Reaction. (Assume that you have filters that you can attach to your light source to control the wavelength of light.)
b) Based on your knowledge of photosynthesis, how would you expect the color of the light to effect the movement of electrons?
c) Draw a line graph of your expected results.
ATP energy molecules are synthesized during the oxidative phosphorylation of cellular respiration in mitochondria and the light reaction of photosynthesis in chloroplasts. Using the diagram below as a guide, compare and contrast the mechanisms of ATP synthesis in the two processes.
Chapter 14 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 14.1 - Prob. 1TQCh. 14.1 - Prob. 2TQCh. 14.2 - Prob. 1TQCh. 14.2 - Prob. 2TQCh. 14.2 - Prob. 3TQCh. 14.3 - Prob. 1TQCh. 14.3 - Prob. 2TQCh. 14.3 - Prob. 3TQCh. 14.4 - Prob. 1TQCh. 14.5 - Prob. 1TQ
Ch. 14.5 - Prob. 2TQCh. 14.6 - Prob. 1TQCh. 14 - Prob. 1RQCh. 14 - Prob. 2RQCh. 14 - Prob. 3RQCh. 14 - Prob. 4RQCh. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - Prob. 9RQCh. 14 - Prob. 10RQCh. 14 - Prob. 11RQCh. 14 - Prob. 1TQCh. 14 - Prob. 2TQCh. 14 - Prob. 3TQCh. 14 - Prob. 4TQ
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- For the following questions, choose one to discuss: chloroplast/photosynthesis State at the outset which one you will discuss. A) What role do proton gradients play in the process of photosynthesis proton gradients allow B) Where are proton gradients formed? Within what structures are they seen in chloroplasts How do the structures help them to maintain a gradient? C) Explain where and how the chloroplast or mitochondria uses passive transport and active transport to complete photosynthesis or cellular respiration.arrow_forwardFor each statement below, write whether the event occurs in GLYCOLYSIS, KREBS CYCLE, or ELECTRON TRANSPORT CHAIN. 1. Oxygen is the final acceptor of electrons 2. Occurs outside the mitochondria 3. Produces FADH2 4. Begins with glucose 5. Occurs in the mitochondrial matrix 6. Ends with pyruvic acid 7. Where chemiosmosis occurs 8 .Forms water 9.Occurs in the inner membrane of the mitochondria 10. Produces the most ATParrow_forwardWrite the net equation for electron transfer from NADH to O2.arrow_forward
- Which is CORRECT for the flow of electrons from NADH? NADH Complex I → ubiquinone Complex III → Cytochrome C - Cytochrome B →O₂ NADH Complex I Complex III → Cytochrome C → Cytochrome C1 → Complex IV NADH Complex I → ubiquinone IV NADH C - 0₂ NADH IV Complex I Complex I → Complex III Cytochrome C → Complex Complex II → ubiquinone → Complex III Cytochrome Complex II ubiquinone →→ Cytochrome C Complexarrow_forwardComplete the following table to compare the electron-transport phase of cellular respiration with the light-dependent reactions of photosynthesis.arrow_forwardPer NADH consumed by Complex I, indicate the number for each, AS those reducing equivalents flow through the electron transport chain. In other words, if "XYZ" molecule gets reduced at one step and then re-oxidized at the next step, that would count as 1 XYZ reduced. Think Total not Net. a)Total # of Cytochrome C proteins reduced b)Total # of H+ pumped across membrane c)Total # of H2O producedarrow_forward
- Draw a simple sketch illustrating an inner mitochondrial membrane that is actively involved in chemiosmosis and label the two compartments it separates. Add the ATP synthase complex, indicate the proton gradient, and specify in which compartment ATP is synthesized.arrow_forwardA: ATP Cellular respiration Bwater and oxygen MITOCHONDRION (animal cell) CHLOROPLAST (plant cell Examine the model depicting the relationship between photosynthesis and cellular respiration. Select ALL of th choices that correctly pairs products and reactants with their place in the model. Photosynthesisarrow_forwardIn the previous question, we identified what products are needed and made at each step of the electron transport chain. In this question, I'd like you to think about what would happen if we applied an herbicide that prevented plant growth by inhibiting some of the pieces in your diagram above. For example, if we applied an herbicide to our plants and it affected the ability of Photosystem II to work, it would prevent he production of oxygen. Let's say we apply an herbicide to our plants and it affects the function of ATP synthase. What product would be inhibited? Group of answer choices ATP NADPH G3P Oxygenarrow_forward
- list three factor which influence enzymatic activity and list the four steps of cellular respiration and where they take place in the cell. Write the equation for cellular reespiration and photosynthesis indicate which reactant is oxdidized and which is reduced in both equationarrow_forwardCreate an analogy that represents cellular respiration, focusing on the Krebs cycle and the Electron Transport chain. Include these terms while describing the events of the analogy: pyruvate, ATP synthase, ATP, electrons, mitochondria, NAD+/FADH, NADH/FADH2.arrow_forwardAssume 10 NADH molecules and 10 FADH2 molecules enter the electron transport chain. How many ATP molecules will be synthesized?arrow_forward
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