The smallest functional unit of life is a cell. Cells are the building blocks of all living organisms, including tissues. Therefore, a single cell is the smallest unit that can be considered a tissue.
While there are many types of cells, they all share some fundamental characteristics. Cells are enclosed by a membrane and contain genetic material (DNA) that directs their activities.
While the smallest tissue is a single cell, there are also smaller structures within cells, such as organelles and molecules. These structures are essential for the functioning of a cell, but they are not considered tissues on their own.
