Which statement is true about prokaryotic cells? - they contain just as many organelles as eukaryotic cells,

- the DNA floats freely in the cytoplasm,

- they make up plants and animals

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms