AS & A Level Biology (9700) — May–June 2024, Paper 42
10 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Osmoregulation is the control of the water potential of body fluids such as blood. Osmoreceptors and antidiuretic hormone (ADH) have an important role in osmoregulation. Name the…
Answer this question and get it marked →Variation exists in populations of a species and this may provide the opportunity for evolution to occur. Phenotypic variation exists in many forms and has a number of possible…
Answer this question and get it marked →Explain why the inheritance of colour pattern in tortoise beetles can be described as involving multiple alleles.
Answer this question and get it marked →Genes have a role in determining the overall phenotype of an organism. Using haemophilia as an example, explain the relationship between a gene, a protein and a phenotype.
Answer this question and get it marked →State one reason why a doctor would recommend that a person has genetic testing for a mutation in the gene BRCA1 and explain why this mutation would put the person at a greater…
Answer this question and get it marked →Fig. 6.1 is a diagram of part of a mitochondrion, showing the outer mitochondrial membrane with proteins, the intermembrane space, and the inner mitochondrial membrane with…
Answer this question and get it marked →A student investigated the effect of temperature on the rate of photosynthesis at two different light intensities. The rate of photosynthesis was determined by measuring the rate…
Answer this question and get it marked →Fig. 8.1 is a diagram of a sensory neurone, showing cell A at one end, the cell body, the myelin sheath, and structure B at the other end. Name the type of cell represented by…
Answer this question and get it marked →The Asian common toad, Duttaphrynus melanostictus, arrived accidentally in eastern Madagascar in 2010 on a ship. Fig. 9.1 shows an Asian common toad. The Asian common toad is now…
Answer this question and get it marked →In mammals, blood glucose concentration is maintained around a set point so that the mammal can function efficiently. This is an example of homeostasis. Name the mechanism that…
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