Metabolism
Metabolism
Metabolism
Cell Structure
Energy for Living
ATP and Energy
ATP and Energy
ATP and Muscles• ATP +HOH --> ADP + P + Energy• Relaxed muscle + energy --> contracted muscle
NAD+
ATP and Muscles
Oxidation of Ethanol with NAD+
FAD
FAD
Electron Transport
Electron Transport
Electron Transport
FMN similar to FAD
Electron Transport
Electron Transport
Cytochrome
Electron Transport
ATP Synthesis• 1.Electrons are transferred from NADH, through a series
of electron carriers, to O2.• 2.Transfer of electrons bycarriers generates a (H+)
gradient across the inner mitochondrial membrane.• 3. H+ diffuses back across the inner mitochondrial
membrane, ATP is synthesized.
How does ATP synthase work?
How does ATP synthase work?• Works like a rotar. Every time three protons are pumped through the channel, the F1 subunit rotates
120 degrees.
What happens at the end of electron transport?
• The overall electron chain transport reaction is: • 2 H+ + 2 e- + 1/2 O2 ---> H2O + energy
• Notice that 2 hydrogen ions, 2 electrons, and an oxygen
molecule react to form as a product, water with energy released in an exothermic reaction.