The herbicide dinoseb, which was removed from the market many years ago, killed plants by uncoupling oxidative phosphorylation. Ironically, plants have embedded in the inner membrane of their mitochondria a protein named the “uncoupling protein” that essentially can carry out the same process caused by dinoseb. The mechanism of uncoupling oxidative phosphorylation involves which of the following scenarios. A. Excess electrons oxidize lipids in the mitochondrial membranes, thus destroying the electron transport chain B. Excessive oxygen is consumed via reduction to water, thus depriving the mitochondria of the ability to carry out phosphorylation that requires oxygen C. The membrane selectivity required to maintain a proton gradient is altered so the potential for driving ATP synthesis via chemiosmosis is degraded D. Uncoupling oxidative phosphorylation kicks a cell into a fermentative pathway that cannot supply sufficient ATP
The herbicide dinoseb, which was removed from the market many years ago, killed plants by uncoupling oxidative phosphorylation. Ironically, plants have embedded in the inner membrane of their mitochondria a protein named the “uncoupling protein” that essentially can carry out the same process caused by dinoseb. The mechanism of uncoupling oxidative phosphorylation involves which of the following scenarios.
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A. Excess electrons oxidize lipids in the mitochondrial membranes, thus destroying the electron transport chain
B. Excessive oxygen is consumed via reduction to water, thus depriving the mitochondria of the ability to carry out phosphorylation that requires oxygen
C. The membrane selectivity required to maintain a proton gradient is altered so the potential for driving ATP synthesis via chemiosmosis is degraded
D. Uncoupling oxidative phosphorylation kicks a cell into a fermentative pathway that cannot supply sufficient ATP
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