Arsenate (ASO) closely resembles phosphate in structure and reactivity. However, arsenate esters are unstable and are spontaneously hydrolyzed. If arsenate is added to actively respiring mitochondria, what would be the effect on ATP synthesis? ATP synthesis will decrease because cells require less energy when arsenate is available. ATP synthesis will not be affected because mitochondria are incapable of taking up arsenate. ATP synthesis will stop due to the formation arsenate-ADP anhydrides. ATP synthesis will increase because arsenate anhydride hydrolysis increases ATP turnover. If arsenate is added to actively respiring mitochondria, what would be the most likely effect on the rate of the electron-transport chain? The rate of electron transport will decrease, because arsenate inhibits Complexes I and II. The rate of electron transport will decrease, because arsenate inhibits the citric acid cycle. The rate of electron transport will increase, because arsenate increases the demand for ATP. The rate of electron transport will increase, because arsenate is uncoupling respiration.

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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Arsenate (AsO³-) closely resembles phosphate in structure and reactivity. However, arsenate esters are unstable and are
spontaneously hydrolyzed.
If arsenate is added to actively respiring mitochondria, what would be the effect on ATP synthesis?
ATP synthesis will decrease because cells require less energy when arsenate is available.
ATP synthesis will not be affected because mitochondria are incapable of taking up arsenate.
ATP synthesis will stop due to the formation arsenate-ADP anhydrides.
ATP synthesis will increase because arsenate anhydride hydrolysis increases ATP turnover.
If arsenate is added to actively respiring mitochondria, what would be the most likely effect on the rate of the
electron-transport chain?
The rate of electron transport will decrease, because arsenate inhibits Complexes I and II.
The rate of electron transport will decrease, because arsenate inhibits the citric acid cycle.
The rate of electron transport will increase, because arsenate increases the demand for ATP.
The rate of electron transport will increase, because arsenate is uncoupling respiration.
Transcribed Image Text:Arsenate (AsO³-) closely resembles phosphate in structure and reactivity. However, arsenate esters are unstable and are spontaneously hydrolyzed. If arsenate is added to actively respiring mitochondria, what would be the effect on ATP synthesis? ATP synthesis will decrease because cells require less energy when arsenate is available. ATP synthesis will not be affected because mitochondria are incapable of taking up arsenate. ATP synthesis will stop due to the formation arsenate-ADP anhydrides. ATP synthesis will increase because arsenate anhydride hydrolysis increases ATP turnover. If arsenate is added to actively respiring mitochondria, what would be the most likely effect on the rate of the electron-transport chain? The rate of electron transport will decrease, because arsenate inhibits Complexes I and II. The rate of electron transport will decrease, because arsenate inhibits the citric acid cycle. The rate of electron transport will increase, because arsenate increases the demand for ATP. The rate of electron transport will increase, because arsenate is uncoupling respiration.
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