The ultimate electron acceptor in the respiration process is molecular oxygen. Electron transfer through the respiratory chain takes place through a complex series of oxidation-reduction reactions . Some of the electron transport steps use iron-containing proteins called cytochromes. All cytochromes transport electrons by convening the iron in the cytochrome. from the +3 to the +2 oxidation state. Consider the following reduction potentials for three different cytochromes used in the transfer process of electrons to oxygen (the potentials have been corrected for pH and for temperature): In the electron transfer series, electrons are transferred from one cytochrome to another. Using this information, determine the cytochrome order necessary for spontaneous transport of electrons from one cytochrome to another, which eventually will lead to electron transfer to O 2 .
The ultimate electron acceptor in the respiration process is molecular oxygen. Electron transfer through the respiratory chain takes place through a complex series of oxidation-reduction reactions . Some of the electron transport steps use iron-containing proteins called cytochromes. All cytochromes transport electrons by convening the iron in the cytochrome. from the +3 to the +2 oxidation state. Consider the following reduction potentials for three different cytochromes used in the transfer process of electrons to oxygen (the potentials have been corrected for pH and for temperature): In the electron transfer series, electrons are transferred from one cytochrome to another. Using this information, determine the cytochrome order necessary for spontaneous transport of electrons from one cytochrome to another, which eventually will lead to electron transfer to O 2 .
The ultimate electron acceptor in the respiration process is molecular oxygen. Electron transfer through the respiratory chain takes place through a complex series of oxidation-reduction reactions. Some of the electron transport steps use iron-containing proteins called cytochromes. All cytochromes transport electrons by convening the iron in the cytochrome. from the +3 to the +2 oxidation state. Consider the following reduction potentials for three different cytochromes used in the transfer process of electrons to oxygen (the potentials have been corrected for pH and for temperature):
In the electron transfer series, electrons are transferred from one cytochrome to another. Using this information, determine the cytochrome order necessary for spontaneous transport of electrons from one cytochrome to another, which eventually will lead to electron transfer to O2.
Definition Definition Chemical reactions involving both oxidation and reduction processes. During a redox reaction, electron transfer takes place in such a way that one chemical compound gets reduced and the other gets oxidized.
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O States of Matter
Sketching a described thermodynamic change on a phase diagram
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The pressure on a sample of pure X held at 47. °C and 0.88 atm is increased until the sample condenses. The pressure is then held constant and the
temperature is decreased by 82. °C. On the phase diagram below draw a path that shows this set of changes.
pressure (atm)
3-
200
temperature (K)
Explanation
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O States of Matter
Sketching a described thermodynamic change on a phase diagram
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The temperature on a sample of pure X held at 0.75 atm and -229. °C is increased until the sample sublimes. The temperature is then held constant and the
pressure is decreased by 0.50 atm. On the phase diagram below draw a path that shows this set of changes.
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pressure (atm)
0-
0
200
Explanation
temperature (K)
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LEKS: Using a phase diagram a X
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○ States of Matter
Using a phase diagram to find a phase transition temperature or pressure
Use the phase diagram of Substance X below to find the melting point of X when the pressure above the solid is 1.1 atm.
pressure (atm)
16
08-
solid
liquid-
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200
400
gas
600
temperature (K)
Note: your answer must be within 25 °C of the exact answer to be graded correct.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell