18 Questions
What is the tendency of the reductant member of a redox pair with a more negative standard reduction potential?
to lose electrons
During the oxidation of one mole of NADH, how many ATP molecules can be synthesized?
3 ATP
According to the chemiosmotic hypothesis, what is the coupling factor for ATP synthesis?
proton flow
Which of the following is a characteristic of a particular redox pair?
standard reduction potential
What is the direction of proton flow during oxidative phosphorylation?
from the matrix to the intermembrane space
What is the result of the flow of electrons from NADH to oxygen?
indirect ATP synthesis
What is the primary function of ATP in the context of cellular reactions?
To act as an energy carrier to facilitate reactions
What is the primary location of ATP synthesis in the mitochondrion?
Inner membrane
What is the primary function of the electron transport chain?
To capture energy released from the flow of electrons
What is the net change in free energy (ΔG) for the hydrolysis of ATP to ADP and Pi?
-7300 cal/mol
What is the role of NADH and FADH2 in the electron transport chain?
To donate electrons to the electron transport chain
What is the name of the process by which ATP is produced from ADP and Pi during the electron transport chain?
Oxidative phosphorylation
What is the function of Complex V in the electron transport chain?
Catalyzes ATP synthesis
Where are the complexes of the electron transport chain located?
Inner mitochondrial membrane
What is the role of coenzyme Q in the electron transport chain?
Accepts hydrogen atoms from FMNH2 and FADH2
What is the product of the reaction catalyzed by NADH dehydrogenase?
FMNH2 and H+
What is the byproduct of the electron transport chain?
Water
What is the function of the iron-sulfur center in NADH dehydrogenase?
Necessary for the transfer of hydrogen
Understanding redox pairs, standard reduction potential, and their relation to electron loss. Learn how to quantify the tendency of a redox pair to lose electrons using E0 in volts. Discover the ranking of redox pairs from most negative to most positive E0.
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