WebCholera 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. Answered by ... WebCholera is a bacterial infection often transmitted in dirty water or contaminated food. The symptoms of infected people include: ... Prepare for GCSE Biology examinations. Personalise your ...

Pathogens - Communicable diseases - AQA - GCSE …

WebCholera causes diarrhoea. Diarrhoea is the loss of watery faeces from the anus. If it is severe and continues for a long time, it can lead to death. Severe diarrhoea can cause … WebType Examples; Direct contact: This can be sexual contact during intercourse or non-sexual contact, like shaking hands. Water: Dirty water can transmit many diseases, such as the … audi a3 e-tron todellinen kulutus

Types of Diseases - Bacterial Diseases: Cholera and Tuberculosis ...

WebSave My Exams! – The Home of Revision For more awesome GCSE and A level resources, visit us at (a) (i) Table 4.1 shows that there are differences in the number of cholera cases reported between the high economic status country and the low economic status countries. Suggest three reasons to explain these differences. 1. WebInfections caused by bacteria. Myobacterium Tuberculosis causes tuberculosis (TB) in humans. The bacteria infect the lungs, causing a chronic cough and bloody mucus. It is a … Web• When doing these IGCSE Biology past year papers, explain that the cholera bacterium produces a toxin that causes secretion of chloride ions into the small intestine, causing osmotic movement of water into the gut, producing diarrhoea, thirst and loss of salts from blood. 7.3 Mechanical digestion Core g9 12 volt