Please help 'rate of Photosynthesis'

[whitemage]

Hi,

I need some help with this question:

"Why does the rate of photosynthesis increase, peak, and then decreases as temperature increases?"

I don't have a biology book, because I am studying Anatomy & Physiology, but we are doing some topics about Biology and well I tried to resort to searching on the web and an online biology book site: http://www.emc.maricopa.edu/faculty/far ... okTOC.html

Can someone please help me with this or at least direct me to a site where I can find the info? Thanks in advance!

[Navin]

Its all about the enzymes.

At high tempearture (around 50 degrees Celcius or more) the enzymes denature and photosynthesis stops.

The rate of photosynthesis peaks when the temperature is optimum for maximum enzyme activity.

[whitemage]

Thanks a lot! ^^

[siya]

normally the photosynthesis rate increases with rise of temp.it reaches a max at 35 C.further rise leads to a fall in the rate and it completely stops at 45 C.it also decreases with fall in temp.however photosynthesis can take place over a wide range of temp.
also the max and optimum temp varies with diff species.
siya