AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), June 2025
Every question from AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), June 2025 (8464): 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 12 marks
Answer questions on genetics in rabbits, including genetic terms, completing a Punnett square for fur colour, explaining allele differences in gametes, and interpreting a karyotype.
Biology · B6: Inheritance, Variation and Evolution
- Question 2 9 marks
Answer questions on reproductive hormones produced by the ovaries and testes, compare barrier and hormonal contraception, and describe how hormones are used in different contraceptive methods.
Biology · B5: Homeostasis and Response
- Question 3 15 marks
Investigate the distribution and percentage cover of buttercup plants at different distances from a tree using gridded quadrats and point quadrats.
Biology · B7: Ecology
- Question 4 11 marks
Explain how genetically modified herbicide-resistant crops increase yield and affect biodiversity, the role of insects and hedgerows, and how peat extraction contributes to climate change.
Biology · B4: Bioenergetics · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 5 11 marks
Answer questions on the adaptation, extinction, fossil formation, evolutionary study, and classification of plesiosaurs.
Biology · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 6 12 marks
Identify the equation representing a linear relationship, explain how a C-peptide blood test distinguishes diabetes types, name the organ producing glucagon, and explain the effects of glucagon deficiency on energy levels.
Biology · B4: Bioenergetics · B5: Homeostasis and Response