2. Aim: What is photosynthesis? I. Photosynthesis – the process in which green plants take in CO 2 and H 2 O in the presence of sunlight and create glucose and oxygen. A. Chemical Equation 6CO 2 + 6H 2 O C 6 H 12 O 6 + 6O 2 Sunlight Chlorophyll What is the difference between autoptrophs and heterotrophs?

3. B. Chlorophyll – green pigment found in chloroplast that converts sunlight energy into ATP to help fuel photosynthesis. C. Chloroplast – organelles in leaf cell that contain chlorophyll. Site of photosynthesis. Why are plants green?

5. Chloroplast Leaf Cross Section

7. II. Factors that affect the rate of photosynthesis Temperature A. Temperature – as temperature increases, so does the rate of photosynthesis. Once the temperature exceeds 35 o C, the rate decreases due to enzymes changing shape. B. L LL Light Intensity – As you increase light intensity, the rate of photosynthesis increases until a maximum rate is reached.

8. CO 2 Concentration C. CO 2 Concentration – Increasing the amount of CO 2 increase the rate of photosynthesis. Amount of Water D. Amount of Water – a shortage of water slows the process of photosynthesis. Minerals E. Minerals – magnesium, nitrogen, zinc, copper, iron, and manganese are needed for the reactions involved in photosynthesis. A shortage of any one of these will slow down the process.