How does cholera cause diarrhoea and dehydration?
Cholera is single-celled organism that produces a toxin. The toxin attaches to the ion receptors in the small intestine which causes it to secrete chloride ions into the lumen. This then causes water to move in by osmosis (as the salt level is now higher in the lumen of the intestine) which can cause diarrhoea and dehydration.
MP
Related Biology A Level answers
All answers ▸"Describe the process of Aerobic Respiration"
Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell.
Explain how a mutation in the gene coding for an enzyme could lead to the production of a non-functional enzyme.
Describe how ATP is generated in the light-dependent reaction of photosynthesis.