They are called "nutrients" to the substances that can be located on the outside of cells (the smallest unit of structure of living beings) that contains the energy necessary for metabolism to enhance all its processes on a regular basis. The so-called nutrients, can become one of the components of cells, through the action of anabolism, where large cells can be obtained, from which used to be smaller; in case this does not happen, they would simply be processed until the organism can extract the energy.
Cells are normally defined as one of the smallest morphological units that can be found in every living being. The anabolism, meanwhile, is one of two processes constituting metabolism, and whose main function is to serve as a biocatalyst or synthesized cellular components; it is with it that nutrients can become part of the constitution of a cell, being found, mostly, outside. Thus, the size of these increases.
Nutrients are classified into three main groups: according to their importance, being thus, the essential and the non-essential; according to quantities, that is, macronutrients and micronutrients; according to their function, being energetic, structural and regulatory. Food is the main and most stable source of nutrients that the body receives; These contain a certain energy index that, as mentioned above, help the body function, and are contained in the form of calories, which in turn house carbohydrates. In addition to these, proteins, fats, and lipids are also capable of providing a certain amount of energy.
