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16 Lipase is an enzyme produced in the human digestive system - OCR Gateway - GCSE Biology - Question 16 - 2022 - Paper 1

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16 Lipase is an enzyme produced in the human digestive system. It breaks down lipids. (a) Fig. 16.1 shows the steps in lipid digestion. Fig. 16.1 Step 1 Step 2 ... show full transcript

Worked Solution & Example Answer:16 Lipase is an enzyme produced in the human digestive system - OCR Gateway - GCSE Biology - Question 16 - 2022 - Paper 1

Step 1

Complete the labels in Fig. 16.1.

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Answer

  1. Lipase enzyme
  2. Digester molecules
  3. Fatty acids and glycerol
  4. Lipid molecules

Step 2

Draw a curve on Fig. 16.2 to show the effect the pH will have on the rate of reaction for the digestion of lipids by lipase.

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Answer

The curve should start low at pH 4, rise sharply as pH increases to around 7-8, where it peaks, and then gradually decline after pH 10, indicating that lipase works best in alkaline conditions.

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