AS & A Level Biology (9700) — February–March 2023, Paper 52
2 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
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Fig. 1.2 shows one type of colorimeter, with a hole to hold the colorimeter tube, a digital readout of absorbance and a colorimeter tube containing a 3 cm3 sample (blue filtrate).…
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The scientists planted GM rice and weedy rice in a field, as shown in Fig. 2.1. Fig. 2.1 shows GM rice plants at the centre, surrounded by concentric rings of weedy rice plants at…
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