A comparison of mitochondria and chloroplasts shows thatMultiple Choiceboth use an increase in pH in their inner-membrane space to produce ATP.they have very different electron transport protein complexes.both generate ATP via an H+H+ electrochemical gradient.both use oxygen as a final electron acceptor.only mitochondria contain ATP synthase.
Question
A comparison of mitochondria and chloroplasts shows thatMultiple Choiceboth use an increase in pH in their inner-membrane space to produce ATP.they have very different electron transport protein complexes.both generate ATP via an H+H+ electrochemical gradient.both use oxygen as a final electron acceptor.only mitochondria contain ATP synthase.
Solution
The correct answer is: both generate ATP via an H+H+ electrochemical gradient.
Here's why:
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Both mitochondria and chloroplasts generate ATP (Adenosine Triphosphate) through a process called chemiosmosis, which relies on the creation of an electrochemical gradient of protons (H+ ions).
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In mitochondria, this process is part of cellular respiration, specifically the electron transport chain and oxidative phosphorylation. The inner mitochondrial membrane pumps H+ ions from the matrix into the intermembrane space, creating a high concentration of H+ ions. These ions then flow back into the matrix through ATP synthase, driving the production of ATP.
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In chloroplasts, the process is part of photosynthesis, specifically the light-dependent reactions. The thylakoid membrane of the chloroplast pumps H+ ions from the stroma into the thylakoid space, creating a high concentration of H+ ions. These ions then flow back into the stroma through ATP synthase, driving the production of ATP.
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Therefore, both mitochondria and chloroplasts use an H+H+ electrochemical gradient to generate ATP.
Similar Questions
Which of the following statements about the electron transport chain and ATP production in the mitochondria is false?Group of answer choicesAny drug that inhibits the ATP synthase will also inhibit the flow of electrons in the ETC.For oxidative phosphorylation to occur, it is essential to have a membrane that is impermeable to protons except through specific proteins pores or protein complexesThe yield of ATP per mole of fuel depends on the type of molecule being catabolized.Some complexes of the respiratory chain pump protons into the matrix to create an electrochemical gradient.Exergonic electron transfer provides the energy for proton pumping.
In eukaryotes, mitochondria are the organelles primarily involved inGroup of answer choiceslipid synthesis.phospholipid assembly.export of enzymes.protein synthesis.energy release/capture.
Selon la théorie chimio-osmotique de mitchell, la synthèse d’ATP a lieu :1 pointA. Dans la membrane mitochondriale externeB. Grâce au gradient de proton de part et d’autre de la membrane mitochondriale interneC. Grâce à la modification de la perméabilité de la membrane mitochondriale interneD. Grâce au transfert d’électron du transporteur le plus oxydant vers le transporteur le moins oxydantEffacer la sélection
Mitochondria is referred to as the "powerhouses" of the cell due to its role in energy production. What biomolecule is mostly produced and used in the inner mitochondrial membrane of animal cells to oxidatively phosphorylate proteins and produce ATP? dNTP ddNTP NADPH NADH
Which statement best describes the role of H+ ions in the mitochondria during cellular respiration?Group of answer choicesH+ ions move through protein complexes of the Electron Transport Chain down their electrochemical gradient to synthesise ATPH+ ions traverse through ATP synthase from the matrix to the intermembrane space to generate an electrochemical gradientH+ ions moving through ATP synthase down their electrochemical gradient releases energy to synthesise ATPThe movement of H+ ions through protein complexes of the Electron Transport Chain directly binds ADP and phosphate to form ATP
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