👉 In the context of biology, a heterokontan is a single cell that contains two types of organelles. This type of cell is known as a "double" cell, because it has two distinct organelles (the nucleus and the mitochondria) that are both present in it. Heterokontans have a unique structure and function, with one set of organelles located within the nuclear membrane and another set outside. This allows these cells to perform specialized functions such as
