1. 2.8: Cell respiration

2. Recap: structure of ATP P P P riboseguanineinorganic phosphate deoxyribosethymine organic phosphate nicotinamidecytosineadenineflavine

3. ATP is a source of energy Energy is released when ATP spits and forms ADP. The energy from this split is immediately available. A lot of the energy produced by cells ends up as heat (environment) therefore the body needs a continual source of energy. ATPADP Cell respiration Cell processes (active)

4. Recap: where in the cell? 1.Glycolysis 1.Phosphorylation 2.Oxidation 2.Link reaction 3.Krebs cycle 4.Oxidative phosphorylation

5. Types of Respiration AnaerobicAerobic No oxygen Small yield of ATP Emergency supply of energy Oxygen Large yield of ATP ‘normal’ energy supply

6. Anaerobic respiration glucose pyruvate carbon dioxide + ethanal ethanol lactic acid Yeast & plants Animals

7. Aerobic respiration glucose pyruvate Krebs cycle Link reaction Waste products are Carbon dioxide + water Waste products are Carbon dioxide + water

8. Investigation: Investigate how the type of sugar affects the rate of respiration. Background information & procedure on moodle.