AP BIOLOGY

Detailed explanation-1: -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-2: -They can be beneficial or potentially dangerous, depending on their type, quantity, and location in the body. Some bacteria, such as those in your gut, help keep you healthy. Other bacteria may cause bacterial infections and require treatment. Antibiotics can be prescribed for certain bacterial infections.

Detailed explanation-3: -Most bacteria won’t hurt you-less than 1 percent of the different types make people sick.

Detailed explanation-4: -These helpful bacteria are mainly located on your skin or in your gut or digestive system. They’re called resident flora, or your microbiome, which are groups of microbes living in and on your body. Gut bacteria keep you healthy by absorbing nutrients, breaking down food and preventing the growth of harmful bacteria.