Electron Transport Chain

Terms in this set (22)

False, the outer membrane is leaky
The inner membrane of the mitochondria is leaky
True
The inner membrane of the mitochondria is impermeable
In the space between the inner and outer membrane
Where is the proton gradient?
The Krebs Cycle
What reactions occur in the matrix of the mitochondria?
False. It is almost 80% protein
The inner membrane is mainly composed of phospholipid rather than protein
In order to capture the energy. If we did it in one jump, FADH2 or NADH to oxygen, we would lose more energy to heat as per the second law of thermodynamics
Why is the ETC linked up in a series of oxidation/reduction reactions?
Oxygen
Molecules that drives the ETC
oxidants are reduced and reductants are oxidized
Oxidants are _______ while reductants are _______
NADH dehydrogenase
What is the formal name for complex I?
Succinate dehydrogenase
The formal name of complex II
Complex II
This complex is known as succinate dehydrogenase
Cytochrome b-c1 complex
The formal name for complex III
Complex III
This complex is known as the cytochrome bc1 complex
Complex IV
This complex is known as the cytochrome oxidase
Complex II
Which complex of the ETC cannot pump protons?
Complex I
This complex transfers 2 electrons
Four protons
Two electrons transferred in complex I pumps how many protons?
two electrons
How many electrons does succinate dehydrogenase (Complex II) transfer to ubiquinone?
Complex III
This complex transfers electrons from ubiquinone to cytochrome C?
Cytochrome oxidase
The formal name for complex IV
*4* protons and *2 O2* are used to make *2* H2O and 42 O2otons and *2 O2* are used to make 2 H2O and 4 protons are pumped into the intermembrane space
In complex IV, or cytochrome c oxidase, ____ protons and ___ O2 are used to make _____ H2O and _____ protons are pumped into the intermembrane space
They are kept tightly bound to complex IV
Where do oxygen radicals go?
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