AS & A Level Biology (9700) — May–June 2025, Paper 24
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →In the roots of plants, specialised tissues are formed from a region in the root tip known as the root apical meristem. Fig. 1.1 shows the different regions of a root tip: zone of…
Answer this question and get it marked →The human pancreas synthesises and secretes a number of different digestive enzymes. These enzymes have their effect in the small intestine. Pancreatic lipase acts by breaking the…
Answer this question and get it marked →Fig. 3.1 is a scanning electron micrograph of a pair of human chromosomes in a stage of the mitotic cell cycle. The magnification is ×8625. Calculate the actual length, to the…
Answer this question and get it marked →A number of species in the genus Plasmodium are known to cause malaria in humans. State the type of organism that causes malaria.
Answer this question and get it marked →The human gas exchange system is responsible for the efficient uptake of oxygen into the blood and for the excretion of carbon dioxide. Ciliated epithelium is a lining tissue…
Answer this question and get it marked →The sinoatrial node (SAN), the atrioventricular node (AVN) and the Purkyne fibres have a role in the initiation and control of heart action. The sinoatrial nodal artery (SN…
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