Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
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Chapter 11, Problem 2AL
Certain chemicals block ATP synthesis by allowing protons and other ions to “leak across membranes,” disrupting the charge and proton gradients established by electron flow through an ETC. Does this observation support the chemiosmosis hypothesis? Explain your reasoning.
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Chapter 11 Solutions
Prescott's Microbiology
Ch. 11.1 - Prob. 1CCCh. 11.1 - Retrieve, Infer, Apply Compare...Ch. 11.1 - Retrieve, Infer, Apply What are the three major...Ch. 11.2 - Is NAD+ reduced to NADH in the catabolic or...Ch. 11.2 - Prob. 1CCCh. 11.2 - Why is it to a cells advantage to catabolize...Ch. 11.2 - Prob. 3CCCh. 11.4 - Which reactions are examples of substrate-level...Ch. 11.4 - For what kinds of reactions is NADPH used?Ch. 11.4 - For what macromolecule is ribose 5-phosphate a...
Ch. 11.4 - Summarize the major features of the...Ch. 11.4 - Prob. 2CCCh. 11.5 - Identify the substrate and products of the TCA...Ch. 11.5 - What chemical intermediate links pyruvate to the...Ch. 11.5 - Prob. 3CCCh. 11.5 - Retrieve, Infer, Apply In what eukaryotic...Ch. 11.5 - Why is it desirable for a microbe with the...Ch. 11.6 - Prob. 1MICh. 11.6 - Prob. 2MICh. 11.6 - Describe the current model of oxidative...Ch. 11.6 - Prob. 3CCCh. 11.6 - Prob. 4CCCh. 11.7 - Prob. 1CCCh. 11.7 - Prob. 2CCCh. 11.7 - Prob. 3CCCh. 11.8 - Prob. 1MICh. 11.8 - Prob. 1CCCh. 11.8 - Prob. 2CCCh. 11.8 - Prob. 3CCCh. 11.8 - Prob. 4CCCh. 11.8 - Prob. 5CCCh. 11.9 - What is the difference between a hydrolase and...Ch. 11.9 - Prob. 2MICh. 11.9 - Retrieve, Infer, Apply Briefly discuss the ways in...Ch. 11.9 - Prob. 2CCCh. 11.9 - Retrieve, Infer, Apply Describe how a...Ch. 11.11 - How do chemolithotrophs obtain their ATP and...Ch. 11.11 - Prob. 2CCCh. 11.11 - Why can hydrogen-oxidizing bacteria and archaea...Ch. 11.11 - What is reverse electron flow and why do many...Ch. 11.11 - Prob. 5CCCh. 11.12 - When electrons from P700 are used to reduce NADP+,...Ch. 11.12 - Define the following terms: light reactions, dark...Ch. 11.12 - Prob. 2CCCh. 11.12 - What is the function of accessory pigments?Ch. 11.12 - Prob. 4CCCh. 11.12 - Compare and contrast anoxygenic phototrophy and...Ch. 11.12 - Prob. 6CCCh. 11 - Prob. 1RCCh. 11 - Prob. 2RCCh. 11 - Prob. 3RCCh. 11 - Prob. 4RCCh. 11 - Prob. 5RCCh. 11 - Prob. 6RCCh. 11 - How would you isolate a thermophilic...Ch. 11 - Certain chemicals block ATP synthesis by allowing...Ch. 11 - Prob. 3ALCh. 11 - Review the description of the Berkeley Pit Lake in...Ch. 11 - Prob. 5AL
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- Figure 4.15 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 affect would cyanide have on ATP synthesis? Figure 4.15 (a) The electron transport chain is a set of molecules that supports a series of oxidation-reduction reactions. (b) ATP synthase is a complex, molecular machine that uses an H+ gradient to regenerate ATP from ADP. (c) Chemiosmosis relies on the potential energy provided by the H+ gradient across the membrane.arrow_forwardDescribe the reaction between electrons, H+, and oxygen at thefinal step of electron transport.arrow_forwardThe electron transport system consists of a series of oxidations rather than one reaction. Why is this an importantfeature of energy capture?arrow_forward
- Define Linear Electron Flow. Explain each step of Linear Electron Flow (Electron Transport Chain) in your own Words. Do not draw the diagram.arrow_forwardExplain the process of electron transfer phosphorylationarrow_forwardWhich electron carrier would have the greatest negative impact on ATP production during oxidative phosphorylation if its production was inhibited? answer choices A.) Water B.) FADH2 C.) Oxygen D.) NADHarrow_forward
- Energy is required to reverse the flow of the electron transport chain. Why would this be so?arrow_forwardExplain the electron transport chain & ATP synthase, and point out active (requireenergy) and passive (no energy input required) processes. Use a simple drawing toillustrate your explanation.arrow_forwardIn the last stage of cellular respiration (ETS and oxidative phosphorylation) what is the fate of the following molecules/atoms/ions: NADH, ADP +Pi, H+, electrons, and oxygen. Can you explain the proton-motive force relating to this?arrow_forward
- The light-dependent reactions include an electron transport chain system that works in a very similar fashion to the electron transport chain in respiration. In complete sentences, briefly describe how this system works and what job it performs in the light-dependent reactions. (Your answer should include a discussion about concentration gradient.)arrow_forwardWhen electron gradients are created in photosythesis and cellular respiration, the electrons are attatched to a proton, so why does it still have a negative charge?arrow_forwardA larger proton gradient is required to forma single ATP in chloroplasts than in mitochondria. Suggest a reason why. Hint: Ions can move across the thylakoid membrane moreeasily than across the inner mitochondrial membrane.arrow_forward
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