Question

select all that apply
which three supporting (i.e., positive) roles do bacteria play in the human body?

• cause disease in many tissues
• regulate temperature
• contribute to immune system development
• produce vitamins in the intestines
• help digest food in the intestines

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Explanation:

• "Cause disease in many tissues" is a negative role, so it's excluded.
• "Regulate temperature" is not a role of bacteria in the human body.
• "Contribute to immune system development" is a positive role of bacteria (e.g., gut bacteria help train the immune system).
• "Produce vitamins in the intestines" (like vitamin K) is a positive role of intestinal bacteria.
• "Help digest food in the intestines" (e.g., breaking down complex carbs) is a positive role of gut bacteria.

Answer:

• Contribute to immune system development
• Produce vitamins in the intestines
• Help digest food in the intestines