Endothermic
"Activation Energy reactions"; Endothermic reactions require energy.
Since life requires energy for movement and keeping warm in addition to synthesizing new tissue, catabolism is the predominant path.
Catalyst increases the rate of reaction without being consumed by it. In addition, while the catalysts lower the activation energy, it does not change the energies of the original reactants nor products. Rather, the reactant energy and the product energy remain the same and only the activation energy is altered.The key importance of activation energy is that collisions only result in a reaction if the particles collide with enough energy to get the reaction started. This minimum energy required is called the activation energy for the reaction.
I have no clue, I need that answer also for Chemistry... :-/
Diffusion is a process that requires no energy (by an organism).
endothermic reaction
if a reaction is carried out at constant temperature to completion it will have a zero activation energy.
endothermic
Any reaction that consumes energy, or has a positive delta(H), is called an endothermic reaction.
endothermic reaction
light reaction
Galvanic cells run spontaneously and do not require any energy to run to completion, but Electrolytic cells require energy to run to completion, and are non-spontaneous.
endothermic
exothermic reactions release energy, like a fire, which releases heat ( also endothermic reactions requires and takes/absorbs energy for its reaction like photosynthesis which requires sunlight)
The reaction that requires direct energy of sunlight to make energy carrier molecules is light reaction. The dark reaction that occurs when the products of the light reaction are used to form C-C covalent bonds of carbohydrates.
Carbon dioxide is the reaction pf photosynthesis. This takes a lot of energy.
chicken dinner