The name of the enzyme present on the mitochondrial membrane, that allows hydrogen ions to flow through to provide the energy to phosphorylate ADP to form ATP is ATP Synthase.
I am thinking it is by heating themselves in sunlight. I think this because when I bring lizards to mind, they are cold blooded, and they need sunlight to bath in so they do not start to lack warmth to live.
I hope this helps.
Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities.