A scientist conducts an experiment where they carefully inject lots of H+ ions into just the matrix of a mitochondrion. What effect would we expect for this to have on respiration and why?Group of answer choicesIncrease in ATP production due to more glycolysisDecrease in ATP production due to equalization of H+ gradientDecrease in ATP production due to less glycolysisThere would be no effect on respirationIncrease in ATP production due to equalization of H+ gradient
Question
A scientist conducts an experiment where they carefully inject lots of H+ ions into just the matrix of a mitochondrion. What effect would we expect for this to have on respiration and why?Group of answer choicesIncrease in ATP production due to more glycolysisDecrease in ATP production due to equalization of H+ gradientDecrease in ATP production due to less glycolysisThere would be no effect on respirationIncrease in ATP production due to equalization of H+ gradient
Solution
The expected effect of injecting H+ ions into the matrix of a mitochondrion would be a decrease in ATP production due to the equalization of the H+ gradient. This is because the process of ATP production in the mitochondria, known as oxidative phosphorylation, relies on a gradient of H+ ions across the inner mitochondrial membrane. This gradient is established by the electron transport chain, which pumps H+ ions from the matrix into the intermembrane space. The flow of H+ ions back into the matrix through ATP synthase drives the synthesis of ATP. If H+ ions are artificially injected into the matrix, this gradient would be disrupted, reducing the driving force for ATP synthesis and thus decreasing ATP production.
Similar Questions
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
You discover a chemical that affects the function of ATP synthase. When exposed to this chemical, ATP synthase allows protons to travel through it to the matrix but the gamma subunit does not turn at all. What would be the effect of this chemical on a cellular level?Group of answer choicesA) more ATP will be madeB) more oxygen will be usedC) less electron transport through the electron transport chain will occurD) no change because catalysis will still occur in the beta subunitsE) A and B
Which step of cellular respiration is most important based on the amount of ATP produced?Group of answer choicesElectron Transfer ChainGlycolysisKreb's CycleCalvin Cycle
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.
Which process results in the greatest amount of ATP?Group of answer choicesThe activity of the electron transport system in the Golgi apparatusThe activity of the electron transfer system in the mitochondriaKrebs cycleGlycolysis
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