1. One of the characteristics of living organisms. Clue: O N E S P I R A T I R

8. Aerobic Respiration occurs at the cell in the ….

9. Mitochondria Glucose O 2 Enzyme Co 2 Energy Water Enzyme

12. Inspiration Air breathed in

14. Expiration Air breathed out

17. Experiment 1 Inspired Air Expired Air 1 st hour 2 nd hour

19. Experiment 2 Air Vacuum Pump Lime Water Expired Air

20. Experiment 3 Expired air Mirror Water droplets

21. Components of inspired and expired air 37 degree celsius Atmospheric temperature Temperature saturated variable Water Vapour About 79 About 79 Nitrogen About 4 About 0.03 Carbon dioxide About 16 About 21 Oxygen Expired air (%) Inspired air (%) Components (%)

23. You cannot live without doing it. BREATHING CLUE:

33. Respiration and breathing Removes carbon dioxide produced during respiration Produces carbon dioxide Takes in oxygen from environment Uses oxygen obtained from breathing A process of gaseous exchange with the environment A process that breaks down food to release energy Take place in the lungs Take place in every cell Takes place all the time Takes place all the time Breathing Respiration

39. Takes place in mitochondria Takes place in chloroplasts End products – carbon dioxide and water End products – glucose and oxygen Uses glucose and oxygen Uses carbon dioxide and water Energy is released Takes in and stores energy Takes in oxygen Gives out oxygen Gives out carbon dioxide Takes in carbon dioxide Does not need chlorophyll Needs chlorophyll Takes place all the time Takes place only when there is light Takes place in all living things Takes place in plants only Process that breaks down food to release energy Process that makes food Respiration Photosynthesis