Electron Transport system Flashcards
4 protein complexes in ETS
Complex I:
NADH dehydrogenase
Complex II:
Succinate dehydrogenase
Complex III:
CoQ-Cytochrome c reductase
Complex IV:
Cytochrome c oxidase
This complex receives electrons from NADH molecules.
Complex 1
As electrons move through _____ __, protons are pumped across the _____ ______ _____ into the intermembrane space.
-Complex I
- inner mitochondrial membrane
This complex directly receives electrons from FADH2, which is formed during the citric acid cycle.
Complex II: Succinate Dehydrogenase
receives electrons from Complex I and II
Complex III: CoQ- Cytochrome c reductase
This complex also plays a role in transferring electrons to the next carrier, cytochrome c.
Complex III: CoQ- Cytochrome c reductase
is the final complex in the electron transport chain. It receives electrons from cytochrome c and transfers them to molecular oxygen, which serves as the final electron acceptor.
Complex IV: Cytochrome c oxidase
is the final complex in the electron transport chain. It receives electrons from ______ __ and transfers them to ______ _____, which serves as the final electron acceptor.
- cytochrome c
- molecular oxygen
an energy-coupling mechanism employed by living organisms to produce ATP
Chemiosmosis Model
Accepts H and electrons from NADH + H+
FMN
A mobile carrier between Complex II and III
Cyt c
Carries electrons from Complex I and II to
Complex III.
Q
Accepts H and electrons from FADH2
Q
Product of elecon transport chain
NAD+, H2O
is the production of ATP using the diffusion of proton as it flows to ATP synthase
Chemiosmosis
