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23 Cards in this Set

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inner membrane
Highly convoluted membrane inside the mitochondrion.
outer membrane
The covering of the mitochodrion.
matrix
The space inside the inner membrane of the mitochondrion.
oxidation
The loss of electrons during a reaction.
reduction
The gain of electrons during a reaction.
oxydative phosphorylation
The series of steps in the production of ATP.
electron transport
The passage of electrons through the respiratory group.
respiratory chain
Physical group of proteins (mostly) embedded next to each other in the inner membrane of the mitochondrion
Complex I
First in respiratory chain:

43 different protein molecules and flavin cofactors and iron ions.
Coenzyme Q
Second in the respiratory chain.

4 protons are translocated across the inner membrane between Complex 1 and CoQ.
Complex III
Third in respiratory chain.

11 proteins.

Four protons are pumped across the membrane.
cytochrome c
Fourth in the respiratory chain.

A single protein that receives electrons from Complex III
Complex IV
26 proteins with copper, zinc, magnesium ions.

Electrons from cytochrome c pass electrons to Complex IV. On their way to O, two more protons are translocated from the matrix to the intermembrane space.
Complex II
FADH2 passes its electrons through this complex - no protons are passed across the inner membrane.
ATP synthase
An enzyme complex embedded in the inner membrane of the mitochondrion. When protons from intermembrane space pass thru ATP is made.
chemiosmotic model
The osmotic pressure of protons across the inner membrane of mitochondrion provides the energy for ATP synthesis.
1 NADH = ____ ATP
3
1 FADH2 = ____ ATP
2
ATP/ADP translocator
A special transporting protein that sends one ATP out of the matrix and brings one ADP in.
TCA cycle
Major source of NADH and FADH2 used by mitochondrion for ATP synthesis.

= Tricarboxylic Acid Cycle
= Krebs Cycle
= Citric Acid Cycle
acetyl-CoA
Major end product of the breakdown of carbohydrates and fatty acids.

A two C compound, containing an acetyl group covalently attached to Coenzyme A.
Coenzyme A
A molecule that does a lot of carrying of fatty acid and other acids.

Attachment is through the sulfur of the CoA cofactor.
GTP
Just like ATP, except guanine instead of adenine.