AS & A Level Biology (9700) — October–November 2024, Paper 31
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: Advanced practical skills
You will need to carry out a serial dilution of the 1.0% starch-milk solution, SM, to reduce the concentration by one fifth between each successive dilution. You will need to…
Answer this question and get it marked →Question 2 · 18 marks · Practical skills: Advanced practical skills
Draw a large plan diagram of the region of the leaf on J1 indicated by the shaded area in Fig. 2.1. Use a sharp pencil. Use one ruled label line and label to identify the lower…
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