What are the organic substances that make up the cells of the human body?

Cells are composed primarily of proteins. Proteins are the structure that forms almost the entire body. In addition to proteins, lipids are important in the formation of the cell membrane. Many enzymes are needed to regulate various vital processes in the cell. They are also organic compounds. Some organisms create organic molecules on their own. This applies to autotrophs. Heterotrophs do not know how to do this. They can absorb ready-made substances and recycle them. For example, to reassemble new proteins from amino acids.