Metabolism. Cell Structure Energy for Living ATP and Energy.

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Presentation transcript:

Metabolism

Cell Structure

Energy for Living

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

Electron Transport

FMN similar to FAD

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?

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 e- + 1/2 O 2 ---> H 2 O + 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.