Why does the rate of photosynthesis increase as temperature increases and only up to a certain temperature?

Question

Why does the rate of photosynthesis increase as temperature increases and only up to a certain temperature?

I know it's related to enzyme activity, but I need to explain it well.

Answer 1

Hi! You are right, its mostly because of the temperature speeding up the various enzymes that catalyze each step of the light reactions and the calvin cycle. Review how enzymes are influenced by temp, pH, etc. and then take a look at all the enzymes that catalyze each step of photosynthesis!

In order to answer it in detail, I would describe in your own words about how temp influences enzymes, and then name the enzymes of the light reactions and the calvin cycle specifically.

It can also slightly be due to increased kinetic energy.

Review a bit about how stomata opening and closing can affect photosynthesis rates as well!  

Answer 2

Enzymes usually function ideally under a certain temperature, if u exceed this temperature, the heat will denature the enzymes and they get destroyed. therefore, photosynthesis will increase under higher heat but after a certain temperature, the excessive heat will destroy the enzymes and so photosynthesis stops.