In _______ organisms, the life processes take place within one cell.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for the type of organisms in which all life processes occur within a single cell.

2. **Identifying the Types of Organisms:** Organisms can be classified into two main categories: unicellular and multicellular.

3. **Defining Unicellular Organisms:** Unicellular organisms are those that consist of only one cell. This single cell is responsible for carrying out all the vital life processes necessary for survival.

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