What is produced from photosynthesis and what is it used for?
Glucose-Energy and making hormones
Oxygen-Waste product, released into atmosphere
What are the 4 things needed for photosynthesis?
Light (from sun)
Carbon Dioxide (from air)
Water (from soil)
Chlorophyll (in leaves)
What is the equation for photosynthesis?
CO2+Water—>Glucose+O2
(Light)
What happens to light energy?
It is absorbed by chlorophyll.
What are the 4 uses of glucose?
Converted into insoluble starch.
Used to provide energy through respiration.
Used to produce fat/oil for storage.
Used to produce proteins (nitrates from soil also needed).
Why is glucose turned into insoluble starch?
Glucose soluble in water, if stored in plant cells it would affect the way water moves in/out of the cells. Lots of glucose stored in cells could destroy water balance in plant.
What are the 3 limiting factors of photosynthesis?
Temperature, Carbon Dioxide and Light.
How can you increase/decrease the rate if photosynthesis?
Increase/decrease the limiting factors.
What would happen to the rate of photosynthesis if the temperature was very high?
It would drop dramatically as the enzymes denature.
What is the optimum temperature for photosynthesis?
Around 40 degrees Celsius.
What are the pros and cons of controlling Carbon Dioxide levels?
Pros: *plants grow larger/faster Cons: *expensive *burns fossil fuels *need to monitor levels