Microbes in Human Welfare
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Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a 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 ?

The sample that can be easily carried is the curd. Curd contains the lactic acid bacteria (Lactobacillus) in large amount, so they can be easily observed. Lactic acid bacteria are also non-pathogenic, so there will be no risk of infection in case of mishandling.
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