Which 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 membrane

Which 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 membrane

Name: Which of the following statements is most correct? The electron transp
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: Which 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 mem

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 10RE: Using the answer code on the right, indicate which form of energy production is being described: 1....

See similar textbooks

Similar questions

How much energy is required to pump a mole of protons in a mitochondria with the following conditions? pH of matrix = 8.2, pH of intermembrane space 7.4, membrane potential of - 65 mV (N-side relative to P-side), temperature = 37C. Express answer to the nearest 0.1 kJ/mole.
Processes taking place in the mitochondrion convert the chemical potential energy of NADH into the chemical potential energy of ATP. A proton concentration gradient (Δ[H+]) is part of this process. Describe exactly where this gradient is located, and how the gradient is produced. In terms of the gradient, where is the higher [H+] and where is the lower [H+]?
As protons (H+) pass through the mitochondria inner membrane… Question 10 options: a) Protons follow their concentration gradient. b) All the potential energy contained in the proton gradient is converted into ATP. c) Some of the potential energy contained in the proton gradient is converted into ATP and some is released as heat (i.e., unusable energy). d) Protons go up in potential energy level and ∆G > 0. e) A and C
Consider a 24:1 △cis-9 fatty acid in the mitochondrion. For each fatty acid given, determine the following. Total number of ATP deducted Total net ATP
In the 1930s, some physicians prescribed low doses of a compound called dinitrophenol (DNP) to help patients lose weight. This unsafe method was abandoned after some patients died. DNP uncouples the chemiosmotic machinery by making the lipid bilayer of the inner mitochondrial membrane leaky to H+. Chemical agents that cause this effect are called uncouplers. Explain how this could cause weight loss and also death. Considering the danger, is there any use for compounds like DNP or other uncouplers?
The production of a hydrogen ion concentration gradient powers the production of ATP in both photosynthesis and cellular respiration. 2,4-Dinitrophenol (DNP) is an organic compound that 'undoes' the hydrogen ion concentration gradient without the production of ATP. It does this by increasing the membrane permeability to hydrogen ions. One use of DNP is as a herbicide.For a brief period in the 1930s, DNP was marketed as a diet pill. Because DNP prevents the production of ATP, the human body will begin to use alternate forms of energy. The result is an increase in the metabolism of fats in the body, thus reducing total body fat. In the presence of DNP, the energy that normally would be converted to ATP for use in the cells is converted to heat instead, causing dangerously high body temperatures.DNP is classified as an illegal substance in Canada and the U.S. although it is still marketed as a commercial chemical. In recent years, several deaths have been reported, primarily in the…
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 gradient
Which of the following among A- D is incorrect regarding the proton motive force and ATP synthase (ATPase)? A) O The F1 subunit of the ATPase binds ADP and phosphate, forms ATP, and then releases ATP B) O Increasıng the difference in pH across the membrane of a bacterial cell would likely increase its proton motive force. O O The ATPase is a molecular motor that moves as protons flow through it. D) O Increasing the negative charge inside a bacterial cell would likely increase the proton motive force. E) O All of A- D is correct.
Which of the following statements is a lie? Select one: a.The continuous pumping of hydrogen ions creates a higher H+ concentration in the matrix inside the mitochondria compared to the concentration in the intermembrane space. b.There are four sets of enzyme complexes labeled with roman numerals I to IV that as a whole is referred to as the Electron Transport Chain (ETC). c.The last electron acceptor is the oxygen ion which is reduced to form water after the process.
Which of the following statements about cellular respiration is TRUE in eukaryotes? A. For every molecule of NADH oxidized in the electron transport chain, 1 molecule of ATP is produced. B. ATP synthase harnesses the flow of protons (hydrogen ions = H+) from the mitochondrial matrix to the intermembrane space to produce ATP. C. ATP synthase transduces the flow of protons (hydrogen ions = H+) from the intermembrane space to the mitochondrial matrix into kinetic (mechanical) energy D. H2O is the final electron acceptor in the electron transport chain, being oxidized to O2 and H+. E. All of the above are true
The mitochondrial membrane potential is an indicator of cell viability. Think about mitochondrial function and decide which of these statements best describes the mitochondrial membrane potential. a.) A voltage that reflects the movement of ATP across the outer mitochondrial membrane b.) A voltage that reflects the movement of protons across the outer mitochondrial membrane c.) A voltage that reflects the movement of protons across the inner mitochondrial membrane d.) A voltage that reflects the movement of ATP across the inner mitochondrial membrane
Referring to the figure below, explain why NADH yields more ATP than FADH2 does. Electron-transport and proton pump Oxidative phosphorylation Outer mitochondrial membrane H* -Intermembrane H+ H+ H+ space H* H+ H+ Cytochrome c H+ COQH, CoQ UU COQH2 CoQ JU U Inner mitochondrial membrane Ht e ATPase Complex II Complex II Complex IV Complex e ADP +P - Mitochondrial matrix NADH NAD+ FADH2 FAD АТР H+ -H+ H+ H20