What is another name for Complex III in the mitochondrial respiratory chain?
The Electron Transport Chain: Complex III

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Science, Chemistry, Engineering, Biology, Physics
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cytochrome C dehydrogenase
Cytochrome C synthase
Cytochrome C reductase
Cytochrome C oxidase
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of ubiquinol in the Q cycle?
It acts as a proton donor.
It serves as an electron donor.
It acts as a substrate for ATP synthesis.
It functions as a coenzyme.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is ubiquinol able to move through the mitochondrial membrane?
It is a protein.
It is hydrophobic.
It is charged.
It is hydrophilic.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the iron-sulfur centers in cytochrome C reductase?
They bind oxygen molecules.
They transfer electrons.
They synthesize ATP.
They pump protons.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons can cytochrome C accept at a time?
Four
Three
Two
One
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the net result of the Q cycle in terms of ubiquinol?
Three ubiquinol molecules are produced.
No ubiquinol molecules are used.
One ubiquinol molecule is regenerated.
Two ubiquinol molecules are consumed.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many protons are pumped across the membrane by Complex III?
Two
Three
Four
Five
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