HUMAN NUTRITION

Detailed explanation-1: -All living things are made of cells (Figure 3.3. 1); the cell itself is the smallest fundamental unit of structure and function in living organisms.

Detailed explanation-2: -The cell is the smallest structural and functional unit of living organisms, which can exist on its own. Therefore, it is sometimes called the building block of life. Some organisms, such as bacteria or yeast, are unicellular-consisting only of a single cell-while others, for instance, mammalians, are multicellular.