IGCSE Biology Paper-3: Specimen Questions with Answers 250 - 251 of 358

Passage

shows a diagram of the heart.

Structure of Photosynthesis

Question 250 (3 of 4 Based on Passage)

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State one function of the liver and one function of the small intestine.

Function of the liver …

Function of the small intestine …

Explanation

Function of Liver

Production of bile, which helps carry away waste and break down fats in the small intestine during digestion. Production of certain proteins for blood plasma. Production of cholesterol and special proteins to help carry fats through the body.

Function of Small Intestine

The small intestine is chiefly involved in the digestion and absorption of nutrients. It receives pancreatic secretions and bile through the hepatopancreatic duct which aid with its functions.

Question 251 (4 of 4 Based on Passage)

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The condition where watery faeces are lost from the body is called diarrhea.

Outline one way in which diarrhea can be treated.

Explanation

Treatment of Diarrhea

  • plenty of fluids to prevent dehydration
  • oral rehydration drinks to replace lost salts and minerals. These drinks are available from pharmacies. An alternative is one-part unsweetened pure fruit juice diluted with four parts of water
  • intravenous replacement of fluids in severe cases
  • medications such as antibiotics and anti-nausea drugs
  • anti-diarrheal medications, but only on the advice of your doctor. If your diarrhea is caused by infection, anti-diarrheal drugs may keep the infection inside your body for longer.