* Cells are the fundamental unit of life: This means they are the smallest structures that can carry out all the functions necessary for life.
* Cells are made of organic molecules: These molecules (like proteins, carbohydrates, lipids, and nucleic acids) are complex and contain carbon, making them "living" in the sense that they are the building blocks of life.
* Cells are organized structures: The organic molecules within a cell are not just randomly scattered. They are organized into organelles, each with a specific function that contributes to the overall life of the cell.
However, it's important to note that:
* Non-living components are also essential: Cells also contain non-living components like water, salts, and minerals, which are vital for their structure and function.
* Life is a process, not a material: While the components of a cell are essential for life, life itself is a complex process of growth, reproduction, metabolism, and adaptation that emerges from the interaction of these components.
Therefore, while a cell is made up of "living material" in the sense that it's composed of organic molecules essential for life, it's more accurate to say that a cell is a living entity that carries out the processes of life.