AS & A Level Biology (9700) — May–June 2025, Paper 52
2 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
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Phosphatases are enzymes that catalyse the removal of phosphate from other molecules, releasing inorganic phosphate (Pᵢ). A phosphatase can be extracted from mung bean seedlings,…
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Sponges are immobile, aquatic animals that live on rocks and sediment at the bottom of salt water environments. Scientists sampled the marine habitats along a length of coastline…
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