Biology 5090 · O Level · Absorption and assimilation

Absorption and assimilation — practice question

The table compares the absorption rates of two sugars, arabinose and glucose, in living and dead intestines. In every case, the sugar concentrations inside the intestines were identical. What are the main methods by which arabinose and glucose are absorbed in living intestine?

  • Aarabinose: active transport; glucose: active transport
  • Barabinose: active transport; glucose: diffusion
  • Carabinose: diffusion; glucose: active transport
  • Darabinose: diffusion; glucose: diffusion

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