BI-1648
Osmosis
Biology · Secondary 4 · Hard · Osmosis
In a person with lactose intolerance, undigested lactose reaches the large intestine. Bacteria there break down lactose to simple sugars. What is the main reason this causes diarrhoea?
- Water moves from the blood into the intestine by osmosis.
- Water moves from the intestine into the blood by osmosis.
- Water is actively pumped from the blood into the intestine.
- Water is lost from the intestine by evaporation into the air.
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