IGCSE Biology (0970) — May–June 2025, Paper 51
2 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 16 marks · Movement into and out of cells - diffusion
You are going to investigate the effect of concentration on diffusion. You will use cubes of agar which contain universal indicator. You will place the cubes of agar into…
Answer this question and get it marked →Question 2 · 24 marks · Biological molecules - food tests (vitamin C / DCPIP)
A student used DCPIP solution to compare the concentration of vitamin C in five solutions. The student used this method: - Put 1 cm³ of 1% DCPIP solution into a test-tube. - Use a…
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