The human body and many foods are composed of organic molecules. These are molecules that contain carbon, hydrogen, and often oxygen. Here are some of the key organic molecules that make up both our bodies and our food:

* Carbohydrates: Sugars and starches, which provide energy.

* Proteins: Made up of amino acids, proteins are essential for building and repairing tissues, transporting molecules, and regulating chemical reactions.

* Lipids (fats and oils): Important for storing energy, insulating organs, and forming cell membranes.

* Nucleic Acids (DNA and RNA): Carry genetic information and play essential roles in protein synthesis.

In addition to these four main classes of organic molecules, both the human body and food contain smaller amounts of other substances like:

* Water: Essential for all biological processes.

* Minerals: Inorganic elements like calcium, iron, and sodium that are needed for various bodily functions.

* Vitamins: Organic compounds that are required in small amounts for many metabolic processes.

So, while the specific proportions and types of these molecules vary greatly between different foods and different parts of the human body, they form the fundamental building blocks of both.