Biology 0610 · IGCSE · Diseases and immunity

Diseases and immunity — practice question

The cholera bacterium makes a toxin that affects humans. What effect does this toxin have on the human body?

  • Athe secretion of chloride ions from the blood into the lumen of the large intestine
  • Bthe secretion of chloride ions from the blood into the lumen of the small intestine
  • Cthe secretion of chloride ions from the lumen of the large intestine into the blood
  • Dthe secretion of chloride ions from the lumen of the small intestine into the blood

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