State any one use of yeast.

Explanation

### Step-by-Step Text Solution

1. **Identify the Organism**: Yeast is a unicellular organism, which means it consists of a single cell. It belongs to the fungi kingdom.

2. **Understand Its Function**: Yeast is known for its ability to feed on sugars. When yeast consumes sugar, it undergoes a process called fermentation.

3. **Recognize the Main Use**: One of the primary uses of yeast is in baking, specifically in making bread.

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