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Cellular respiration
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1. 2 - ATP (substrate-level phosphorylation)

2. 6 - NADH

3. 2 - FADH2

4. 4 - CO2

Slide 27

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

Location: inner mitochondrial membrane.

Uses ETC (cytochrome proteins) and ATP Synthase (enzyme) to make ATP.

ETC pumps H+ (protons) across innermembrane (lowers pH in innermembrane space).

Slide 28

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

The H+ then move via diffusion (Proton Motive Force) through ATP Synthase to make ATP.

All NADH and FADH2 converted to ATP during this stage of cellular respiration.

Each NADH converts to 3 ATP.

Each FADH2 converts to 2 ATP (enters the ETC at a lower level than NADH).

Slide 29

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

4. Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)

Slide 30

4. ETC and Oxidative Phosphorylation (Chemiosmosis for NADH)

4. ETC and Oxidative Phosphorylation (Chemiosmosis for NADH)

Slide 31

4. ETC and Oxidative Phosphorylation (Chemiosmosis for FADH2)

4. ETC and Oxidative Phosphorylation (Chemiosmosis for FADH2)

Slide 32

TOTAL ATP YIELD

TOTAL ATP YIELD

1. 04 ATP - substrate-level phosphorylation

2. 34 ATP - ETC & oxidative phosphorylation

38 ATP - TOTAL YIELD

Slide 33

Eukaryotes (Have Membranes)

Eukaryotes (Have Membranes)

Total ATP Yield

02 ATP - glycolysis (substrate-level phosphorylation)

04 ATP - converted from 2 NADH - glycolysis

06 ATP - converted from 2 NADH - grooming phase

02 ATP - Krebs cycle (substrate-level phosphorylation)

18 ATP - converted from 6 NADH - Krebs cycle

04 ATP - converted from 2 FADH2 - Krebs cycle

36 ATP - TOTAL

Slide 34

Maximum ATP Yield for Cellular Respiration (Eukaryotes)

Maximum ATP Yield for Cellular Respiration (Eukaryotes)

36 ATP (maximum per glucose)

Slide 35

Prokaryotes (Lack Membranes)

Prokaryotes (Lack Membranes)

Total ATP Yield

02 ATP - glycolysis (substrate-level phosphorylation)

06 ATP - converted from 2 NADH - glycolysis

06 ATP - converted from 2 NADH - grooming phase

02 ATP - Krebs cycle (substrate-level phosphorylation)

18 ATP - converted from 6 NADH - Krebs cycle

04 ATP - converted from 2 FADH2 - Krebs cycle

38 ATP - TOTAL

Slide 36

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