AS & A Level Biology (9700) — May–June 2024, Paper 43
4 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 outlines the effect of antidiuretic hormone (ADH) on the cells of the collecting duct. The cell-signalling mechanism of ADH is similar to that of glucagon on liver cells.…
Answer this question and get it marked →Phenotypic variation exists in many forms. Some examples of phenotypic variation in plants and animals are described in Table 2.1. Complete Table 2.1 by stating whether the cause…
Answer this question and get it marked →A genetic cross was carried out between two plants heterozygous at both gene loci. The resulting offspring genotypes are shown in a Punnett square in Fig. 3.2 (gametes TD, Td, tD,…
Answer this question and get it marked →Genetic engineering is a technique used to modify the genetic material of a specific organism to change a characteristic. Genetic engineering uses specific enzymes and commonly…
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