1. Photosynthesis and Cellular Respiration

2. Photosynthesis and cellular respiration show the exchange of oxygen and carbon dioxide between living things and the environment.

3. Photosynthesis
Definition- the process by which a cell captures energy in sunlight to make food for the cell
Chloroplast- Organelles found only in plant cells that carry out photosynthesis.

4. 2 Stages of Photosynthesis
Stage 1: Capturing the Sun’s Energy
occurs mostly in the leaves.
Chloroplasts are the green organelle inside plant cells. They’re green because green light wavelengths are reflected not absorbed but other colors are absorbed.
The main photosynthetic pigment in chloroplasts is chlorophyll!

5. Stage 2: Using Energy to Make Food
Next, the cell uses the captured energy to produce sugars - the cell needs two raw materials for this stage – Water (H2O) & Carbon Dioxide (CO2)
The root absorbs water from the soil
Then the water moves up through the plant’s stem to the leaves
Carbon Dioxide enters the plant through the small openings on the underside of the leaves called the stoma
Once in the leaves, the water and carbon dioxide move into the chloroplasts

6. Photosynthesis Equation
Reactants  Product R.A.P. (reactants, arrow, product)

7. Cellular Respiration
Definition- when the chemical bonds of glucose (from photosynthesis) are broken down in the presence of oxygen to produce energy
Mitochondria- Organelles found in plant and animal cells that carry out cellular respiration.

8. Respiration Equation

9. Photosynthesis and respiration are related. P. 234 in textbook