1. ELECTRON TRANSPORT SYSTEM

2. Recaps
Gycolysis
glucose(C6H12O6) + 2 ADP + 2 Pi + 2 NAD+ 
2pyruvic acid(C3H4O3) + 2 ATP + 2 H2O + 2 NADH + 2 H+
Pyruvate dehydrogenase
pyruvic acid + NAD+ + CoASH acetyl-CoA(C2H3O-CoA) + CO2 + NADH + H+
TCA
acetyl-CoA(C2H3O-CoA) + 3 NAD+ + FAD + GDP + Pi + 2H2O
CoA-SH + 2 CO2 + 3 NADH + 3 H+ + FADH2 + GTP

3. Overall
Glucose (C6H12O6) + 2 ADP + 2 Pi + 2 NAD+ (cytoplasm)
+ 8 NAD+ + 2 FAD + 2 GDP + 2Pi + 2 H2O (mitochondria)
+ 2 ATP + 2 NADH + 2 H+ (cytoplasm)
+ 6CO2 + 8 NADH + 8 H+ + 2 FADH2 + 2 GTP (mitochondria)
Much of the energy released by oxidation of glucose has
been retained in bonds of reduced NADH and FADH2

5. Electron transport and ATP synthesis as described in BIS 2A:

6. reduced donor oxidized donor
(e.g. malate) (e.g. OAA)
oxidized acceptor reduced acceptor
(NAD+) (NADH + H+)
1/2 O H2O
Why do electrons
flow in this direction?

12. -2H+
-e- || O OH | . O.