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The Human Digestive System (GCSE Biology)

The following is a GCSE Biology test covering 'The Human Digestive System' from the broader topic Organisation. The test is geared towards the AQA exam board style syllabus.
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What is the role of bile in digestion?
Why is it important that the small intestine has a large internal surface area?
Which of the following is absorbed directly into blood capillaries of the small intestine villi?
Where are most water and mineral salts absorbed in the digestive system?
What is the role of the liver in digestion?
Where is amylase first released in the human digestive system?
What causes heartburn and indigestion when stomach acid moves up into the oesophagus?
A person with cystic fibrosis may have difficulty digesting certain foods because:
Into which vessels do absorbed fatty acids and glycerol (as chylomicrons) first enter?
What is the main function of the villi lining the small intestine?
Which type of digestion begins in the mouth?