Do you agree that 'A cell is a building unit of on organism'. If yes, explain why?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement "A cell is a building unit of an organism" suggests that cells are fundamental components that make up living organisms.

2. **Definition of a Cell**: A cell is defined as the structural and functional unit of life. This means that every living organism is composed of cells, which perform essential functions necessary for life.

3. **Cell Theory**: The concept of cell theory is crucial in supporting this statement. The cell theory was proposed by scientists Schleiden and Schwann, who stated that:
- All living organisms are made up of cells.
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