What evidence supports the contention that the proton gradient drives ATP formation in mitochondria? Give at...
What evidence supports the contention that the proton gradient drives ATP formation in mitochondria? Give at least 2 lines of evidence.
Homework Answers
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP.Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase,causing it to spin (like a water wheel)and catalyze conversion of ADP to ATP.
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What evidence supports the contention that the proton gradient
drives ATP formation in mitochondria? Give at...
What supports the contention that proton gradient drives ATP formation in mitochondria? Explain the process of...
What supports the contention that proton gradient drives ATP formation in mitochondria? Explain the process of ATP synthesis?
Both mitochondria and chloroplasts use electron transport to pump protons, creating an electrochemical proton gradient, which...
Both mitochondria and chloroplasts use electron transport to pump protons, creating an electrochemical proton gradient, which drives ATP synthesis. Are protons pumped across the same (analogous) membranes in the two oraganelles? Directionality of the pump? Is ATP synthesized in analogous compartments? Fully explain your answers.
In mitochondria, a proton gradient is established by the movement of electrons through the electron transport...
In mitochondria, a proton gradient is established by the movement of electrons through the electron transport chain. Protons are moved to the intermembrane space against the concentration gradient and the flow back to the matrix via facilitated diffusion using the ATP synthase. Describe how this proton flow contributes to ATP synthesis and the role played by aspartic acid in this process.
Beta barrels are present in mitochondria.The formation of a concentration gradient in the mitochondria is necessary...
Beta barrels are present in mitochondria.The formation of a concentration gradient in the mitochondria is necessary for the efficient creation of ATP, such as hydrogen channels, but is this what these β-barrels are involved in, or do they have some other function?
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electro...
1. Which one of the following shows the correct sequence of energy transitions during chemiosmosis? A. NADH → electron acceptors → proton gradient → ATP synthase → ATP B. NADH → NAD+ → FADH2 → electron acceptors → ATP C. carbohydrates → acetyl CoA → CO2 → proton gradient → ATP D. NAD+ → NADH → protons → ADP → ATP E. glucose → pyruvate → acetyl CoA → NADH → ATP 2. Facultative anaerobes: A. prefer carbon dioxide. B....
why was it necessary to isolate mitochondria to study and also use engineered vesicles that either...
why was it necessary to
isolate mitochondria to study and also use engineered vesicles that
either did or did not contain atp synthetase?
by the first ATP s r aasing the enzyme to function as an ATPase and result in ATP ATP synthase would likely drive the ATP synh reverse direction, s Original Paper The oniginal experiments on pli and ATP formation were donc on chloroplasts The chemiosmotic generation of ATP is simila to mitochondria, but occurs across tihe thylašoid...
7. What would happen to the ATP yield of cellular respiration if (a) the transporter that...
7. What would happen to the ATP yield of cellular respiration if (a) the transporter that imports pyruvate into the mitochondria stopped working? Explain. (b) the transporter that imports pyruvate into the mitochondria worked only at 10% of its normal capacity? Explain. (c) The inner membrane of the mitochondria became affected by an antibiotic that prevented the buildup of a proton gradient. Explain. (d) ATP synthase started to make one ATP per proton. Explain.
What type of gradient is critical to ATP formation by oxidativephosphorylation?A.sodium ionB....
What type of gradient is critical to ATP formation by oxidative phosphorylation?A.sodium ionB.chloride ionC.protonD.potassium ionE.None of the answers is correct.Which of the following citric acid cycle intermediates would become depleted if malonate, a competitive inhibitor of succinate dehydrogenase, were present?A.citrateB.α-ketoglutarateC.succinateD.malateE.None of the answers is correct.Which of the following correctly pairs a coenzyme with the enzyme of the pyruvate dehydrogenase complex with which it is associated?A.coenzyme A: pyruvate dehydrogenaseB.NAD+: dihydrolipoyl dehydrogenaseC.lipoic acid: pyruvate dehydrogenase kinaseD.thiamine pyrophosphate: dihydrolipoyl dehydrogenaseE.FAD: dihydrolipoyl transacetylaseWhich of...
Calcium ions move out of the cell against a concentration gradient. What drives this active transport?...
Calcium ions move out of the cell against a concentration gradient. What drives this active transport? a) vesicles fusing with the membrane b) receptor-mediated exocytosis c) diffusion d) hydrolysis of ATP
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
why was it necessary to
isolate mitochondria to study and also use engineered vesicles that
either did or did not contain atp synthetase?
by the first ATP s r aasing the enzyme to function as an ATPase and result in ATP ATP synthase would likely drive the ATP synh reverse direction, s Original Paper The oniginal experiments on pli and ATP formation were donc on chloroplasts The chemiosmotic generation of ATP is simila to mitochondria, but occurs across tihe thylašoid...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
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