Biological pathway

Example of dopamine and serotonin biological pathways.

In cell biology, a biological pathway is a series of molecular interactions among molecules within a cell that leads to a specific product or a change in the cell.

Biological pathways allow cells to respond to internal and external signals through biochemical reactions. They are involved in processes such as cell growth and development. These pathways can trigger the assembly of new molecules, such as fats or proteins, regulate gene expression, or stimulate cell movement.

Some of the most common biological pathways are involved in metabolism, gene regulation, and signal transduction. The study of biological pathways is important in advanced studies of genomics, systems biology, and medicine, as disruptions in these pathways are associated with diseases such as cancer.

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