Multiple choice

Which of the following is/are transported into the intestinal cells by both Na-independent and Na-dependent facilitated diffusion?

  1. Glucose

  2. Fructose

  3. Galactose

  4. Dipeptides
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dipeptides are transported into the intestinal cells by both Na-dependent and Na-independent facilitated diffusion. The Na-independent process of transport involves hydrogen peptide co-transport along a hydrogen gradient. In most systems, dipeptide transport is coupled with sodium uptake.

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