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Gut bacteria at work

Open to everyone until Tuesday, September 29

To keep it, print it while it is open.

Gut bacteria break down parts of food that the body cannot digest on its own. This releases nutrients that pass through the intestinal wall into the blood.

In the picture

  1. Rod-shaped bacterium: a gut microbe beside food fragments
  2. Food fragment: a clump of partly broken-down food
  3. Intestinal wall: the cell-covered surface lining the gut
  4. Nutrient dot: a small released nutrient crossing the wall
  5. Red vessel: a blood channel receiving nutrients beneath the wall

Examples

  • Beans and whole grains contain fibers that gut bacteria ferment into useful compounds.
  • Yogurt with live cultures adds bacteria that can help process food in the gut.

Carry on in the app

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Biology, Age 15