Electron transport chain Flashcards
What is a couple reaction?
When 1 is changing, other is also changing, therefore 2 reactions happening at the same time
What is chemiosmosis ?
The process where energy from the hydrogen ion gradient across the inner mitochondrial membrane is used to synthesize phosphorylation of ADP to ATP.
https://www.youtube.com/watch?v=zJNx1DDqIVo
Video for electron transport chain lol
In ETC, what is a gradient?
a gradient refers to the buildup of protons (H⁺) on one side of the inner mitochondrial membrane.
when there is buildup, that means higher concentration
What makes the high concentration in the intermembrane space?
As electrons move through the chain, protons are pumped out, creating a high concentration of protons outside and a low concentration inside.
Differences in concentration drives protons back through the enzyme ATP synthase, which uses their flow to make _____________.
ATP (energy)
What is oxidative phosphorylation?
A slower, oxygen dependant way of making more ATP.
More: What creates a gradient with higher concentration of hydrogen in the intermembrane space?
When energy is used to pump protons out of the matrix and
into the intermembrane space.
As H+ is pumped into the intermembrane space, an
___________________ occurs across the inner membrane
and the _____ occurs.
electrical gradient , matrix
The energy generated by this electrical gradient is called a
proton motive force
What is the overall function of the ETC?
To produce ATP, so cells can use energy to do their daily tasks
Where is the ETC located?
Inner membrane of the mitochondria
What is the chemiosmotic theory?
The chemiosmotic theory explains how ATP is made in cells. The movement of protons (H⁺) across a membrane (like in the electron transport chain) creates a gradient. This gradient powers the enzyme ATP synthase to produce ATP.
the final electron acceptor in the electron transport chain is …
oxygen
When oxygen accepts electrons, it combines with _______ to form water (H₂O) as a result.
protons (H⁺)
