Photosynthesis and Respiration 1

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Objectives To understand the process of photosynthesis and be able to explain it To understand the process of cellular respiration and be able to explain it To be able to apply this scientific knowledge and understanding to a new situation To work in teams to present this work in both oral and written form 2

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1.1 4

Synthetic leaves are made from silk fibres that contain green chloroplasts 1.1 4

1.2 5

1.2 Synthetic leaves could be used to cover the outsides of buildings. 5

1.3 6

A bottle garden is an example of a self-supporting life support system. Image to be replaced 1.3 6

Photosynthesis and Respiration 1.4 7

Photosynthesis and Respiration Light Energy Photosynthesis (Chloroplast) Carbon Dioxide Sugar Oxygen Water vapour Respiration (Mitochondrion) Energy released 1.4 7

Photosynthesis 1.5 8

Photosynthesis Oxygen Sunlight Carbon dioxide Water Glucose 1.5 8

Photosynthesis Respiration Carbon Dioxide + Water Oxygen + Glucose Oxygen + Glucose Carbon dioxide + Water + Energy 1.6 9

Photosynthesis Respiration Carbon Dioxide + Water Oxygen + Glucose ?CO2 + ?H2O ?O2 + C6H12O6 Respiration Oxygen + Glucose Carbon dioxide + Water + Energy ?O2 + C6H12O6 ?CO2 + ?H2O + Energy 1.6 9

Photosynthesis Respiration Carbon Dioxide + Water Oxygen + Glucose 6CO2 + 6H2O 6O2 + C6H12O6 Respiration Oxygen + Glucose Carbon dioxide + Water + Energy 6O2 + C6H12O6 6CO2 + 6H2O + Energy 1.6 9

During daytime 10

During daytime Plants photosynthesise at a faster rate than they respire, using carbon dioxide for photosynthesis and releasing the extra oxygen produced. Oxygen (O2) Glucose (C6H12O6) Water Carbon Dioxide (CO2) 10

At night 11

At night Plants respire but do not photosynthesise. Oxygen is taken into the leaf, and waste carbon dioxide is released. Water Oxygen (O2) Carbon Dioxide (CO2) 11

Presentation results Team Total 12

Presentation results Team Total The winning team is: 12