Final answer:
Cells are the basic units of life that make up organs, each specialized for specific functions. These cells and organs are essential for survival and the proper functioning of the body. Understanding the role of cells helps us comprehend the intricacies of life itself.
Step-by-step explanation:
Your younger neighbor is correct in saying that organs are large structures that keep us alive. Organs such as the heart, lungs, and kidneys each have specific functions that are essential for our survival. However, these organs are made up of many cells, which are the basic units of structure and function in all living things. Without cells, life as we know it would not exist, because cells carry out the basic life processes necessary for an organism's survival.
Each cell type is specialized to perform a specific role within the body. For example, nerve cells transmit electrical signals to coordinate bodily functions, muscle cells facilitate movement, and immune system cells defend the body against pathogens. Cells work together to form tissues, which then combine to create organs, each playing a vital role during growth, development, and day-to-day maintenance of the body.
In conclusion, while organs are crucial for life, it is the multitude of specialized cells that construct these organs and carry out the necessary life processes. Because all living things, including humans, are made up of cells, understanding cell structure and function is fundamental to understanding life.