The digestive system produces enzymes - Edexcel - GCSE Biology - Question 2 - 2018 - Paper 1
Question 2
The digestive system produces enzymes.
Draw one straight line from each enzyme to the nutrient that it breaks down.
**enzyme** **nutrient*... show full transcript
Worked Solution & Example Answer:The digestive system produces enzymes - Edexcel - GCSE Biology - Question 2 - 2018 - Paper 1
Step 1
Part (a) - Draw the lines correctly
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Answer
Lipase digests carbohydrates.
Amylase digests protein.
Protease digests fat.
No lines should intersect.
Step 2
Part (b)(i) - Describe the digestion of carbohydrate in organs
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Answer
Organ Y digests more carbohydrate than organ W, with a mass of 34g compared to 6g/28g.
Step 3
Part (b)(ii) - Explain why organ Y digests more carbohydrate
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Answer
Organ Y is the small intestine, where food spends more time because it is longer. More carbohydrate is digested than in any other organ, as it contains carbohydrates.
Step 4
Part (b)(iii) - Suggest two reasons for differences
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Answer
Organ X is the stomach, which does not digest carbohydrates effectively.
Organ Y contains acid/low pH or carbohydrates/amylase are not present/denatured.
