Electron Transport Chain Flashcards
The overall purpose of the Electron Transport Chain is to convert _____ and _____ to ____
NADH; FADH2; ATP
The Mitochondria is composed of a ________ as well as various _____ embedded in the membrane that act as _______ transporters, __________, and ion ________ used to shuttle H+ ions.
Phospholipid Bilayer; proteins; electron; channels; pumps
The matrix of the mitochondria is considered to be____________
acidic
The first major event that happens during this process is that ____ ions are donated by both NADH and FADH2
H+
As each NADH and FADH2 releases a ___ ion they also release an ______. These electrons are donated to ______ embedded in the membrane and begin to get passed down an ________________
H+; electron; proteins; electron transport chain
When the electrons are first donated, they are in a ____ energy state and by the time they reach the final protein they are in a ____ energy state
high; low
oxygen is known as the ____________________
final electron acceptor
The final electron acceptor is ______
oxygen
The reason the flow of electrons is critical is due to the fact that they release free ______ as they are passed from protein to protein.
energy
The energy that is given off by the electrons is used to _____ H+ ions from the matrix to the intermembranal space.
move
You should now have __ H+ ions in the matrix and __ H+ ions in the intermembranal space. Because there are more on one side of the membrane versus the other, it is called a ______ gradient
2; 6; proton
There is also a protein complex that forms a ______ in the membrane. This channel is permeable to H+ ions flowing from the intermembranal space into the matrix. This is actuall considered a type of ______ diffusion because ions are moving from a high to a low concentration with the help of a ______ channel.
channel; facilitated; protein
As H+ ions move through the channel, they change the _____ of the enzyme ATP synthase and a ______ gets added to ADP. When a phosphate is added to ADP, the resulting molecule is called ATP.
shape; phosphate; ATP
Because ______ is the fianl electron acceptor and becomes slightly energized by the electrons, it spontaneously combines with the H+ to produce ______
Oxygen; Water
Place the following in order:
a. H+ ions flow through a protein channel.
b. NAdH and FADH2 lose a H+ ionn and an electron.
c. H+ ions get pumped from the mitochondrial matrix to the intermembranal space.
d. Electrons donated by NADH and FADH2 get passed down a chain of proteins.
e. ADP is converted to ATP.
f. NADH and FADH2 are produced in Glycolysis and/or the Citric Acid Cycle.
f, b, c, d, a, e
