Key learning objectives
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gcse · biology · Pearson Edexcel · All papers
Releases 1 August 2026
Ultimate and Lifetime users can create one saved set of 4 extended-response questions for this topic and mark answers with examiner-style feedback.
Examiner-style long-answer practice with automatic marking, improvement advice and ProofCoach tracking.
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Amylase pH required practical
Write your answer first, then mark it.
Blood vessel drawing
| image diameter (mm) | actual diameter (mm) |
|---|---|
| 36 | 2.4 |
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Time for starch digestion at different pH values
| pH (pH) | time for starch to disappear (s) |
|---|---|
| 4 | 220 |
| 7 | 55 |
| 10 | 190 |
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Amylase pH repeat data
| pH (pH) | repeat 1 (s) | repeat 2 (s) | repeat 3 (s) |
|---|---|---|---|
| 6 | 80 | 78 | 84 |
| 7 | 55 | 58 | 54 |
| 8 | 70 | 68 | 72 |
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Paying students get 20 stored MCQs per generation session and 2sessions each month. Your set is saved here so you can reset and retake it without using another allowance. If the bank is running low, replenishment happens in the background.