Bacteria cannot be seen with the naked eye but these can be seen with the help of microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?

Explanation

To demonstrate the presence of microbes under a microscope, I would carry a sample of curd from home. Here’s the step-by-step reasoning:

1. **Selection of Sample**: I would choose curd as my sample. Curd is a dairy product that is easily available at home and contains a large number of bacteria.

2. **Presence of Microbes**: Curd contains millions of lactic acid bacteria (LAB), specifically Lactobacillus species. These bacteria are responsible for the fermentation process that converts milk into curd.

3. **Reason for Fermentation**: When milk is kept at a warm temperature and a small amount of starter culture (which contains LAB) is added, the bacteria ferment the lactose (milk sugar) into lactic acid. This lactic acid causes the milk proteins to coagulate, resulting in the solidification of milk into curd.

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