EBK BIOLOGY: CONCEPTS AND APPLICATIONS
9th Edition
ISBN: 9780100478657
Author: STARR
Publisher: YUZU
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Chapter 7, Problem 2CT
Summary Introduction
To determine:
The process by which bacteria synthesizes ATP without mitochondria.
Introduction:
The process of electron transfer phosphorylation occurs in the inner mitochondrial membrane. This process results in the formation of ATP. Mitochondria is present in eukaryotes but is absent in prokaryotes. The membranes in mitochondria serve the purpose where electron transfer phosphorylation occurs. The bacteria (prokaryote) also synthesize ATP by electron transfer phosphorylation, but they do not have mitochondria.
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EBK BIOLOGY: CONCEPTS AND APPLICATIONS
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- Which 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_forwardFigure 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? Intermembrane space Mitochondrial matrix ATP Synthase ADP Inner mitochondrial membrane ATP Figure 7.11 ATP synthase is a complex, molecular machine that uses a proton (H) gradient to form ATP from ADP and inorganic phosphate (Pi). (Credit: modification of work by Klaus Hoffmeier)arrow_forwardFigure 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?arrow_forward
- Cellular respiration is a very challenging topic to learn. Instead of asking you many detailed questions about the process, I would rather you show me that you understand the big picture. Why is it necessary for all organisms to do cellular respiration? It doesn't matter if you are a top tier consumer like you and I or a simple decomposing yeast, all organisms must do some sort of cellular respiration. You can answer this by describing the overall purpose and outcome of cellular respiration. You are not required to get into minute details. I DELLarrow_forwardLook at the figure below and answer the following questions. The organelles shown are called [Select] The locations within the organelle are identified by letters J- N. The letter O means other or not shown.. In [Select] synthesis (carbon fixation) taking place. In [Select] concentration of protons H+ In L you would find the light harvesting photosystems embedded. In N you would find a ATP synthase embedded. In [Select] J. Outer membrane. K. Inner membrane- L. Thylakoid you would find carbohydrate V membrane transport system with a proton pump embedded. M. Lumen- N. Stroma.- you would find a higher you would find a short electronarrow_forwardWhich of the following statements is most correct? The electron transport chain - A: generates a pH gradient that reduces O2 to H2O B: generates a proton gradient across the outer mito membrane C: generates a proton gradient across the inner mito membrane D: uses the energy stored in high energy electron carriers to synthesize ATP E: establishes a membrane potential across the outer mito membranearrow_forward
- The figure below shows an illustration of a mitochondrian. Mustration of a mitochondrion Which of the following best describes the relationship between the structure and function of the mitochondrion? A B с D The shape of the mitochondrion Increases its material-exchange efficiency by maximiz ing its overall volume relative to its surface area. The double-membrane structure of the mitochondrion allows it to maintain its relatively acidic environment in which nutrients can be digested. The folds of the mitochondrion Inner membrane increase its material-exchange effi- ciency by maximizing its surface area relative to its volume. The specific structure of the mitochondrion Inner membrane allows it to correctly guide the folding of proteins into their functional shape.arrow_forwardDuring aerobic respiration in the mitochondria of eukaryotes, which product molecules contain the oxygen atoms that started out in substrate diatomic oxygen gas molecules? cell biology carbon dioxide only C6H12O6 only glucose only CO2 only H2O onlyarrow_forwardImagine that you develop a procedure to measure the pH of in the matrix and the intermembrane space of a mitochondrion. What pattern of pH would you see? The pH in the intermembrane space will contain more H+ and have a lower pH compared to the matrix. The pH in the intermembrane space will contain more H+ and have a higher pH compared to the matrix. The pH within the matrix will contain more H+ and have a lower pH compared to the intermembrane space. The pH within the matrix will contain more H+ and have a higher pH compared to the intermembrane space.arrow_forward
- This statement is incorrect about mitochondrial membranearrow_forwardFigure 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_forwardBelow is a diagram of the cross section of a mitochondrion. Fill in the blanks by choosing words from the Word Bank. Word Bank. Stroma membrane Electron Transport Chain accumulation site The structure at A is The process occurring at C is H+ ******** ADP H* H* ATP Chemiosmosis H+ The area at E is (E) ATP synthase Inner membrane NAD+ + H+ Matrix H* B H+ Vacuole FADH₂ NADH H* Citric acid cycle FAD + 2H+ The structure at B is H* Cyt c Stomate H* Calvin Cycle 1/20₂ + 2H+ Intermembrane space The sequence of events at D is H* H₂O A Outer 0000000000 Protonarrow_forward
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