Name the group of bacteria involved in setting milk into curd. Explain the process they carry in doing so. Write another beneficial role of such bacteria.

Explanation

### Step-by-Step Solution:

1. **Identify the Group of Bacteria**:
- The group of bacteria involved in setting milk into curd is **Lactobacillus**.

2. **Explain the Process**:
- **Lactose Fermentation**: Lactobacillus acts on the milk sugar known as **lactose**.
- **Conversion to Lactic Acid**: The bacteria ferment lactose and convert it into **lactic acid** through a process called fermentation.
...