Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?(1 point)

Question

Responses

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

Photosynthesis 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 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.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Skip to navigation
page 8 of 8

Answer 1

The correct response is:

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

Photosynthesis is an endothermic reaction that requires energy (usually from sunlight) to convert carbon dioxide and water into glucose and oxygen. In this process, the reactants are at a lower energy state compared to the products, meaning that energy must be added to overcome the activation energy barrier. On the other hand, cellular respiration is exothermic, meaning it releases energy as it converts glucose and oxygen into carbon dioxide and water, with the products being at a lower energy state than the reactants.