Molecules are not living things. They are chemicals. Most things are composed of molecules of one kind or another, though.
Many living things release energy from the sugar molecule glucose.
DNA
protein?
Glycogen
Last I heard, the energy molecule for humans is ATP, adenosine triphosphate. I don't think that other living things such as plants have ATP. They do photosynthesis. But regarding humans, ATP is taught to be the energy molecule.
Atp/adp
glucose
H.2o
DNA
The water molecule, H2O, comprises 70% or more of living creatures.
They use glucose.
The oxygen molecule, theoretically, does not live. We depend on it. So yes.