CELLULAR RESPIRATION

MAKING ENERGY AVAILABLE FOR LIVING THINGS

Adenine Ribose 3 Phosphate groups

Section 8-1

ATP

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ADP ATP

Energy

EnergyAdenosine diphosphate (ADP) + Phosphate Adenosine triphosphate (ATP)

Partiallychargedbattery

Fullychargedbattery

Section 8-1

Figure 8-3 Comparison of ADP and ATP to a Battery

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Glucose

Glycolysis Krebs cycle

Electrontransport

Fermentation (without oxygen)

Alcohol or lactic acid

Chemical PathwaysSection 9-1

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REDOX REACTIONS

• ALWAYS THINK: LEO-GER• WHEN AN ATOM LOSES AN ELECTRON,

IT IS OXIDIZED (AND IT LOSES ENERGY!!)

• WHEN AN ATOM GAINS AN ELECTRON, IT IS REDUCED (IT GAINS ENERGY!!)

• THIS ALWAYS HAPPENS TOGETHER!!• ELECTRONS ARE ADDED TO CARRIER

MOLECULES LIKE NAD+ AND FAD+

GlucoseGlycolysis

Cytoplasm

Pyruvic acid

Electrons carried in NADH

Krebs Cycle

Electrons carried in

NADH and FADH2 Electron

Transport Chain

Mitochondrion

Figure 9–2 Respiration: An Overview

Mitochondrion

Section 9-1

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Glucose

To the electron transport chain

Figure 9–3 GlycolysisSection 9-1

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2 Pyruvic acid

Glucose Pyruvic acidLactic acid

Figure 9–4 Lactic Acid FermentationSection 9-1

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FlowchartSection 9-2

Glucose(C6H1206)

+Oxygen

(02)

GlycolysisKrebsCycle

ElectronTransport

Chain

Carbon Dioxide

(CO2)+

Water(H2O)

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Cellular Respiration

Citric Acid Production

Figure 9–6 The Krebs CycleSection 9-2

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Mitochondrion

Figure 9–7 Electron Transport ChainSection 9-2

Electron TransportHydrogen Ion Movement

ATP Production

ATP synthase

Channel

Inner Membrane

Matrix

Intermembrane Space

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Mitochondrion