What is the basic unit of structure for all animals and plants, consisting of protoplasm?

The basic unit of structure for all animals and plants is the cell. Cells are often referred to as the building blocks of life because they are the smallest units capable of performing all the functions necessary for life. Each cell consists of protoplasm, which includes the cytoplasm and the nucleus, where critical processes such as metabolism, energy production, and reproduction occur.

In both plants and animals, cells come together to form tissues, which then combine to create organs. However, it is at the cellular level that the fundamental characteristics and functions of living organisms are realized. Hence, understanding the significance of the cell is crucial for studying biology and health sciences.