AS & A Level Biology (9700) — May–June 2025, Paper 32
2 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 22 marks · Practical skills
Invertase is an enzyme that catalyses the breakdown of sucrose into glucose and fructose. Invertase can be extracted from yeast cells. You will investigate the effect of an…
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K1 is a slide of a stained transverse section through a plant stem. Draw a large plan diagram of the region of the stem on K1 indicated by the shaded area in Fig. 2.1 (a quarter…
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