Final answer:
Protein is very good at building different molecular structures and is found in all living things
Step-by-step explanation:
The subject in question is Protein. Proteins are very good at building different molecular structures and are found in all living things. They are one of the four main types of macromolecules found in living organisms, along with carbohydrates, lipids, and nucleic acids. Proteins are made up of amino acids, which are the building blocks of proteins. They play a crucial role in the development and functioning of all organisms.