Final answer:
An entirely organic molecule group consists of carbohydrates, lipids, proteins, and nucleic acids, all of which are composed of carbon atoms bonded to hydrogen, and often oxygen and other elements.
Step-by-step explanation:
A group consisting entirely of organic molecules would include components such as carbohydrates, lipids, proteins, and nucleic acids. These biomolecules are fundamental to life and are composed of carbon atoms covalently bonded to hydrogen and usually oxygen, and sometimes nitrogen, phosphorus, and sulfur. Carbon's ability to form four covalent bonds allows it to create complex and diverse molecular structures, which serve as the building blocks of living organisms.
Materials that fall under the category of organic molecules must contain carbon, and these organic compounds are significant to human functioning as they form large macromolecules or polymers through the process of dehydration synthesis. Recognizable examples of monomers, the smaller units that combine to form these polymers, include glucose (a simple sugar) and amino acids (the building blocks of proteins).