EVERYDAY SCIENCE

Detailed explanation-1: -Humans need bacteria and their genes more than most of us thought. One of the most important things microbes do for us is to help with digestion. The mix of microbes in your gut can affect how well you use and store energy from food.

Detailed explanation-2: -Not all bacteria are harmful, and some bacteria that live in your body are helpful. For instance, Lactobacillus acidophilus-a harmless bacterium that resides in your intestines-helps you digest food, destroys some disease-causing organisms and provides nutrients.

Detailed explanation-3: -Still many bacteria make great contributions to industry, agriculture, and environmental protection. There are two sides to bacteria. When they are positioned in the proper place, they can be our friend; once they walk in the wrong place, they become our enemy. Therefore, bacteria are both our friend and our foe (Fig.

Detailed explanation-4: -Creating products, such as ethanol and enzymes. Making drugs, such as antibiotics and vaccines. Making biogas, such as methane. Cleaning up oil spills and toxic wastes. Killing plant pests. Transferring normal genes to human cells in gene therapy. Fermenting foods (see Figure below). 15-May-2021