Date: December 8, 2016 Aim #30: How do different factors affect the rate of photosynthesis? HW: Daily Review of class notes. Photosynthesis Practice Packet Test corrections due Monday Do Now: What role do pigments play in photosynthesis? Why do plants appear green? Name the pigment responsible! Why do leaves change color in the fall? What method can we use to separate different pigments?

Aim #30: How do different factors affect the rate of photosynthesis?

1) What is needed for photosynthesis? From soil? From air? From the sun?

2) How is the light energy absorbed? Chloroplast CO2 + H2O Sugars + O2 6H2O + 6CO2 ----------> C6H12O6+ 6O2 Go to Section:

3) What factors affect the rate of photosynthesis? Light intensity Carbon Dioxide concentration Moisture (water) concentration Temperature

4) How does ___________ affect photosynthesis? light intensity 4) How does ___________ affect photosynthesis? An increase in light intensity increases the rate of photosynthesis until a maximum rate is reached.

5) How does ________________ affect photosynthesis? CO2 concentration 5) How does ________________ affect photosynthesis? Increasing CO2 concentration in the air around a plant usually increases the rate of photosynthesis… maybe we should all sing to our plants!

6) How does ____________ affect photosynthesis? Temperature 6) How does ____________ affect photosynthesis? As temperature increases, the rate of photosynthesis increases. At 45 degrees C, enzymes begin to be destroyed Photosynthesis

7) How does _________________ affect photosynthesis? H2O concentration 7) How does _________________ affect photosynthesis? Water shortage slows down photosynthesis Stomates close to prevent excess water loss… however, this also reduces the exchange of CO2 and O2

8) How do ____________ affect photosynthesis? minerals Magnesium and nitrogen are required to make chlorophyll Zinc, magnesium, iron & copper are used for reactions.

So, how can we increase the rate of photosynthesis? enzyme 6H2O + 6CO2 ----------> C6H12O6+ 6O2