AS & A Level Biology (9700) — May–June 2025, Paper 35
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
Complete Table 1.2 to show the volumes of E (100.0% catalase solution) and W (distilled water) needed to prepare at least three more concentrations of catalase, making a total…
Answer this question and get it marked →Question 2 · 18 marks · 4 Cell membranes and transport
Make a plan diagram of the midrib region of the leaf from slide N1. The midrib region is shown as the shaded area in Fig. 2.1. Label the cuticle on your plan diagram.
Answer this question and get it marked →