How does the rate of photosynthesis depend on temperature?
The rate of photosynthesis depends on temperature the same way enzymes depend on temperature. Photosynthesis involves enzyme assistance. Enzymes are biological catalysts that speed up chemical reactions. Enzymes are affected by pH and temperature. If the pH is too acidic or basic, enzymes will be denatured (which means they will change shape and not be able to catalyze reactions as well or entirely). Same goes for temperature. If the temperature is too cold or too hot, the enzymes might deactivate, or their efficiency will be inhibited. So, if the temperature of the organism’s environment is too high or low, the rate of photosynthesis will decrease because the enzymes aren’t working properly. On the other hand, if the temperature is optimal for enzyme activity, the rate will increase, as production is at its high.