PATHOLOGY

Detailed explanation-1: -The smallest and most fundamental unit of life is a cell. The cell was found in 1665 by Robert Hooke. The cell has been described as the most fundamental structural and functional unit in all living forms, including bacteria, plants, animals, and humans.

Detailed explanation-2: -Cells are the basic structural and functional unit of all life. Examples include red blood cells and nerve cells. Tissues. Tissues are groups of cells that share a common structure and function and work together.

Detailed explanation-3: -Cells are structural units as they form the structure of the organism. Cells combine to form tissues, which further combine to form organs, and organs combine to form organic systems, which further combine to form an organism. So, the cell is the basic structural unit for all unicellular and multicellular organisms.