Presentation on theme: "Ch 9- Cellular Respiration"— Presentation transcript:
1 Ch 9- Cellular Respiration Equation for cellular respiration6 O₂+ C₆H₁₂O₆→ 6 CO₂+ 6 H₂O + EnergyPhotosynthesis?6 CO₂+ 6 H₂O + Energy→6 O₂+ C₆H₁₂O₆Occurs in 3 stagesGlycolysis- anaerobic, takes place in cytoplasm, products enter mitochondriaKreb’s Cycle- aerobic (requires oxygen), occurs in mitochondriaCitric Acid CycleElectron transport chain- aerobic, occurs in mitochondria
2 Main Stages of Cell respiration Glycolysis needs 2 ATP molecules to begin processWhat happens during glycolysis?2 molecules of pyruvic acid, 2 molecules of ATP, and 2 molecules of NADH are producedKreb’s Cycle- Citric Acid CycleDuring cycle, pyruvic acid is broken down into carbon dioxide in a series of energy extracting reactionsEnergy output from one molecule of pyruvic acid= 4 NADH, 1 FADH₂, and 1 molecule of ATPNADH, FADH ₂ are high energy electron carriers
3 Main Stages cont.Electron transport chain- takes place in mitochondriaUses high energy electrons from Krebs cycle to convert ADP to ATP8 NADH and 2 FADH ₂ from Kreb’s cycleEach NADH produces 3 molecules of ATPEach FADH ₂ produces 2 molecules of ATPOxygen serves as last electron acceptor, and water is last product made
4 Totals Glycolysis- 2 ATP and 2 NADH 2 NADH produces 4 ATPKrebs Cycle- 2 ATP, 8 NADH, and 2 FADH ₂Electron Transport Chain- uses NADH and FADH ₂ to produce ATPNADH produces 24 ATPFADH ₂ produces 4 ATPTotal ATP molecules formed during cellular respiration= 36
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