Some types of energy are potential energy, kinetic energy, nuclear energy, thermal energy, and there are many more.
What's common in all of those energies I have listed above is that energy no matter what kind you mention all have the ability to do work but some do it in different ways.
I think that because since it doesn't have a nucleus or as many organelles as eukaryotic.They are smaller in size and don't have membrane bound structures.
