EVERYDAY SCIENCE

Detailed explanation-1: -Most types of bacteria aren’t harmful; many are even helpful. They make up your microbiome, which keeps your gut healthy. Other bacteria, called pathogens, can cause infections that require treatment. Healthcare providers can prescribe antibiotics to treat many of these infections.

Detailed explanation-2: -But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E.

Detailed explanation-3: -Bacteria can be harmful, but some species of bacteria are needed to keep us healthy. The bacteria on our skin, in our airways, and in our digestive system are the first line of defense against foreign “invaders” (pathogens) that can cause infection and other problems.

Detailed explanation-4: -out of these E coli helps in the food digestion. lactobacillus is found in curd, and can ferment milk into cheese and yoghurt. Harmful bacteria: there are number of bacteria that causes various diseases to living organisms, such bacteria are referred to as harmful bacteria.