Anabolism is a biochemical process in metabolism where the simple molecules combine to generate complex molecules. This process is endergonic, which means it is not spontaneous and requires energy to progress the anabolic reaction. The complex molecules obtained are further used to store energy in the form of ATP (Adenosine Tri Phosphate).
Cells use an anabolic process to make polymers, repair, and grow tissues. For example:
C6H12O6 + C6H12O6 → C12H22O11 + H2O
NH2CHRCOOH + NH2CHRCOOH → NH2CHRCONHCHRCOOH + H2O
CH2OHCH(OH)CH2OH + C17H35COOH → CH2OHCH(OH) CH2OOCC17H35
6CO2 + 6H2O → C6H12O6 + 6O2
There are three stages in anabolism. They are
Various species depend on various sources of energy. A few have been discussed below:
The nutrients from food are broken down into small blocks in the catabolic pathway. Macromolecules are formed when small molecules are combined. During the anabolic pathway, energy is utilized to generate large molecules by forming chemical bonds between the smaller molecules. These macromolecules are further used to build new cells or structure the cells. Anabolism is essential for maintenance, growth, and development of a cell.
DNA (Deoxyribonucleic acid), is a macromolecule which is made up of smaller molecules known as nucleic acids. These nucleic acids are made up of a nucleotide base attached to a phosphate and deoxyribose sugar molecule. DNA synthesis takes place in the nucleus of the cell before cell division.
It involves the following steps: