Photosynthesis+01.12.08

__**Photosynthesis**__

The sun provides the ultimate source of energy for life on Earth and, by trapping it and using it to produce food, green plants form the start of most food chains.

__Is affected in different ways:__ Temperature because if it is too hot enzymes denatured, if it's too cold enzymes don't work. For instance, in a photosynthesis graph you will see that the rate of photosynthesis begins to go faster and faster until it slowly decreases since enzymes are denaturing.

Light intensity as rate of photosynthesis increases to a certain point, since it's got a limit. Basically it produces more glucose and oxygen, and after a certain point it stops growing. But what is limiting it from growing? CO2 or temperature. (Note: different plants, have different limits)

CO2 levels, affect the rate of photosynthesis in a similar way that light intensity does, it has a limit by a certain factor.

Moisture, because plants cannot photosynthesis with out water.

Latitude and altitude, of where the plants are located, due to the temperature.

__Best light for photosynthesis:__ 1st Blue 2nd Red Why? Because of their wavelengths size, they absorb light much more than any other colour.