What are the 4 major classes of organic molecules found in living things?
Carbohydrates. protein, lipids and nucleic acids.
1) Carbohydrates are those which contain three elements C, H and O. They are further classified in three. Monosaccharides, Oligosaccharides and Polysaccharides. The main function of carbohydrates is to provide energy to living organisms.
2) Protein contains C, H, O, N and S (in few). Protein provides function and structure to living organisms.
3) Lipids have C, H, and O but they are different from carbohydrates. They are classified in fats and oil. Fats are saturated and solid at room temperature while oil are unsaturated and liquid at room temperature. Lipids also make living bodies and store high amount of energy.
4) Nucleic acids contain C, H, O, N and P. They are of two types; DNA and RNA. Nucleic acids are hereditary material and responsible for the transmission of characters from parents to offspring.