Helpful Bacteria are described as which of the following?

Helpful Bacteria are described as which of the following?

• A. Produce toxins causing illness in humans
• B. Aid digestion in the small intestine
• C. Harmful Bacteria produce toxins
• D. Protozoa need moisture

Answer: (A)

Helpful bacteria support digestion and gut health. In the digestive system, beneficial microbes such as Lactobacillus and Bifidobacterium help break down certain carbohydrates that human enzymes can’t digest, assist with absorption, and contribute to vitamin production (like vitamin K and some B vitamins). They also help keep the gut ecosystem balanced by crowding out potential pathogens and supporting immune function. The idea of "producing toxins" is associated with harmful bacteria, not the helpful ones, so that description doesn’t fit. Protozoa are a different kind of organism altogether and their moisture needs aren’t describing bacteria. So, the correct view is that helpful bacteria aid digestion in the small intestine.

Helpful bacteria support digestion and gut health. In the digestive system, beneficial microbes such as Lactobacillus and Bifidobacterium help break down certain carbohydrates that human enzymes can’t digest, assist with absorption, and contribute to vitamin production (like vitamin K and some B vitamins). They also help keep the gut ecosystem balanced by crowding out potential pathogens and supporting immune function. The idea of "producing toxins" is associated with harmful bacteria, not the helpful ones, so that description doesn’t fit. Protozoa are a different kind of organism altogether and their moisture needs aren’t describing bacteria. So, the correct view is that helpful bacteria aid digestion in the small intestine.