Energy metabolism · Physiology

The primary metabolic role of dietary fiber in energy metabolism is to:

  1. Provide readily available direct glucose
  2. Substantially increase dietary fat absorption
  3. Produce short-chain fatty acids via fermentation
  4. Directly stimulate pancreatic insulin secretion in the fed state
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Correct answer: Produce short-chain fatty acids via fermentation

Dietary fiber is fermented by gut bacteria to short-chain fatty acids. These provide energy to colonocytes and influence systemic metabolism.

Difficulty: Medium Question 20 of 20

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