Our body, including our brain, is constantly changing. Within each of the 37 trillion cells  there is a relentlessly hive of activity maintaining, coordinating and enhancing functioning. All this activity is based on four major molecules—macromolecules—essential for all known forms of life. These are fats, carbohydrates, nucleic acids and proteins.
Fats and carbohydrates are the source of all energy for the body, while nucleic acids (meaning from the nucleus) and proteins (meaning primary or first) constitute the components of the body.
Mario D. Garret ©2016
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