1. Photosynthesis and Respiration
Cell Processes
Photosynthesis and Respiration

2. Photosynthesis
Nearly all living things get their energy either directly or indirectly from energy of sunlight.

3. An organism that makes its own food.
Autotrophs
An organism that makes its own food.

4. Heterotrophs
Organism that cannot make its own food.

5. Two Stages of Photosynthesis
Capturing the sun’s energy
Chlorophyll- the green pigment in plants that captures the sun’s energy. Found in the chloroplasts of a plant cell.
2. Using Energy to Make Food
With water and carbon dioxide to make glucose (sugar) to use as food.

6. Equation for Photosynthesis
6CO2 + 6H2O > C6H12O6 + 6O2

7. Respiration
During respiration cells break down simple food molecules such as sugar and release the energy they contain
This occurs in the mitochondria of all cells.

8. Stage One
In the cytoplasm, glucose is broken down into smaller molecules and a small amount of energy is released.

9. Stage Two
In the Mitochondria, the smaller molecules combine with oxygen to produce water and carbon dioxide, this reaction releases a large amount of energy

10. You can think of photosynthesis and respiration
as opposite processes