Biology 0610 · IGCSE · Osmosis

Osmosis — practice question

Diarrhoea is one symptom of cholera. It happens because water is lost by osmosis, which is triggered by the cholera toxin. What effect do cholera toxins have that causes diarrhoea?

  • Asecretion of chloride ions out of the small intestine lowering the water potential
  • Bsecretion of chloride ions out of the small intestine raising the water potential
  • Csecretion of chloride ions into the small intestine lowering the water potential
  • Dsecretion of chloride ions into the small intestine raising the water potential

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