AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2024
Every question from AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2024: 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 11 marks
Answer a set of questions about limpets on a sea shore, including a food chain, quadrat sampling calculations, evaluating random sampling methods, planning random placement of quadrats, identifying hazards, and naming water pollution that could affect limpet populations.
Biology · Required Practicals · B7: Ecology · Biology Required Practicals
- Question 2 10 marks
Answer multiple-choice and extended-response questions about potato plant classification, asexual and sexual reproduction, identifying organisms in the same genus, and why genetically modifying crop plants may help humans survive climate change.
Biology · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 3 15 marks
Answer a set of genetics and reproduction questions about AKU inheritance, Punnett squares, mutation effects on enzymes, IVF, and arguments against embryo screening.
Biology · B6: Inheritance, Variation and Evolution
- Question 4 8 marks
Describe hormonal control of increased basal metabolic rate in rats and explain, using table data, how natural selection changes the percentage of warfarin-resistant rats when warfarin is given and after it stops.
Biology · B5: Homeostasis and Response · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 5 9 marks
Define ecosystem, describe how animal species contribute to community stability, calculate a ratio from river pollution data, evaluate a claimed proportional relationship between bacteria and dissolved oxygen, and explain how reduced dissolved oxygen affects otter populations.
Biology · B7: Ecology
- Question 6 17 marks
Answer a series of questions about hormones, blood glucose control, reaction time, homeostasis, and synaptic chemicals using data from an investigation in people with Type 1 diabetes.
Biology · B5: Homeostasis and Response