Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?

Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.


Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.

Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.


Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.