Activation energy is the minimum energy needed for ‘successful collisions’ where atoms within the reactants rearrange to form products. It can be represented on an energy level diagram.

A reaction profile includes the activation energy, which is the minimum energy needed by particles when they collide for a reaction to occur. The activation energy is shown as a 'hump' in the line ...

Rather than burning all their energy in one large reaction, cells release the energy ... cells store energy by shunting glucose into fat synthesis pathways. One gram of fat contains nearly six ...