Role of gut microbiome · NCERT Biology

The gut microbiome mainly contributes to digestion by:

  1. Producing digestive hormones in the gut
  2. Breaking down complex carbohydrates
  3. Secreting bile salts into the intestine
  4. Absorbing amino acids directly from food
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Correct answer: Breaking down complex carbohydrates

Gut microbes ferment complex carbohydrates like cellulose and dietary fibers that human enzymes cannot digest. This process aids digestion and provides additional energy to the host.

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