Fill in the blank. ________ is the basic unit of life.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the term that represents the basic unit of life.

2. **Defining the Basic Unit of Life**: The basic unit of life is defined as the smallest structural and functional unit that can carry out all life processes.

3. **Identifying the Term**: The term that fits this definition is "cell".

4. **Explaining the Role of Cells**: Cells are essential because they make up all living organisms. They can exist as single-celled organisms (unicellular) or as part of multicellular organisms.

5. **Structure of Organisms**: In multicellular organisms, cells group together to form tissues, which then combine to form organs, and multiple organs work together in organ systems to create a complete organism.

6. **Conclusion**: Therefore, the blank can be filled with the word "cell".

**Final Answer**: Cell is the basic unit of life.

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