LIpids
Protein
Nucleic Acid
carbohydates
Lipids are commonly refers to as fats and they contain the most energy because when body burn lipids for fuel, it released more energy when compared to other organic compounds. Also, they come into the body in different forms.
Nucleic acids are DNA and RNA respectively and they make the proteins that are present in almost every structure and perform every function in the body.
Carbohydrates are the largest number of organic molecules present in the body. Thus, carbohydrates are sugars and the simplest sugar is glucose which provides fuel for many organisms including human.
Protein is the most versatile of all organic molecules by making up the structures and performs various functions within organisms. Proteins are made by building block known as amino acids.