1. Nutrient Cycles and Energy Flow 2
Lesson 4
August 27th, 2010

2. The Carbon Cycle (2 parts)
1. Photosynthesis
2. Cellular respiration
All living things contain carbon
Plants obtain carbon from the atmosphere
Forests are carbon reservoirs as well as coal and oil deposits
Oceans are also reservoirs for carbon dioxide

3. 1. Photosynthesis
The process that plants use to capture energy from sunlight
Plants use chlorophyll to combine carbon dioxide from the air (CO2) and water (H­2O) to produce a sugar called glucose (C6H12O6) and oxygen gas (O2)
Summary
Carbon dioxide gas + water + sunlight  glucose + oxygen gas
CO2 + H2O + sunlight  C6H12O6 + O2

4. Make a simple drawing of this

5. 2. Cellular respiration
The process both Plants and animals both to turn glucose into energy. The is almost the reverse of photosynthesis
Summary
Glucose + Oxygen gas  Carbon dioxide + Water + energy
C6H12O6 + O2  CO2 + H2O + energy

6. Do not copy this – It is beyond grade 9

7. Photosynthesis + Cellular Respiration = Carbon Cycle

8. MSIP
Read pages 34-39
Its Friday so I thought I would give you a break from the questions.
There may be a little 5-10 min quiz on Monday