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Ch 9- Cellular Respiration Equation for cellular respiration – 6 O₂+ C₆H₁₂O₆→ 6 CO₂+ 6 H₂O + Energy Photosynthesis? – 6 CO₂+ 6 H₂O + Energy→6 O₂+ C₆H₁₂O₆.

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Presentation on theme: "Ch 9- Cellular Respiration Equation for cellular respiration – 6 O₂+ C₆H₁₂O₆→ 6 CO₂+ 6 H₂O + Energy Photosynthesis? – 6 CO₂+ 6 H₂O + Energy→6 O₂+ C₆H₁₂O₆."— Presentation transcript:

1 Ch 9- Cellular Respiration Equation for cellular respiration – 6 O₂+ C₆H₁₂O₆→ 6 CO₂+ 6 H₂O + Energy Photosynthesis? – 6 CO₂+ 6 H₂O + Energy→6 O₂+ C₆H₁₂O₆ Occurs in 3 stages – Glycolysis- anaerobic, takes place in cytoplasm, products enter mitochondria – Kreb’s Cycle- aerobic (requires oxygen), occurs in mitochondria Citric Acid Cycle – Electron transport chain- aerobic, occurs in mitochondria

2 Main Stages of Cell respiration Glycolysis needs 2 ATP molecules to begin process What happens during glycolysis? – 2 molecules of pyruvic acid, 2 molecules of ATP, and 2 molecules of NADH are produced Kreb’s Cycle- Citric Acid Cycle – During cycle, pyruvic acid is broken down into carbon dioxide in a series of energy extracting reactions – Energy output from one molecule of pyruvic acid= 4 NADH, 1 FADH₂, and 1 molecule of ATP NADH, FADH ₂ are high energy electron carriers

3 Main Stages cont. Electron transport chain- takes place in mitochondria – Uses high energy electrons from Krebs cycle to convert ADP to ATP – 8 NADH and 2 FADH ₂ from Kreb’s cycle Each NADH produces 3 molecules of ATP Each FADH ₂ produces 2 molecules of ATP – Oxygen serves as last electron acceptor, and water is last product made

4 Totals Glycolysis- 2 ATP and 2 NADH – 2 NADH produces 4 ATP Krebs Cycle- 2 ATP, 8 NADH, and 2 FADH ₂ Electron Transport Chain- uses NADH and FADH ₂ to produce ATP – NADH produces 24 ATP – FADH ₂ produces 4 ATP Total ATP molecules formed during cellular respiration= 36


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