Answer:
All of the statements in the question about macromolecules are true, except that saying "Because all the energy is tied up in the bonds, macromolecules have very little energy in them"
Explanation:
Macromolecules are organic because all of them contain carbon chemical bonds. These bonds use to be covalent, and they are strong. It means that they are not really easy to break. These bonds represent potential energy, and breaking them releases the necessary energy for cells subsistence (ATP generation for example).