AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2020
Every question from AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2020: 7 questions, 70 marks, each with its mark scheme and topic.
- Question 1 9 marks
Identify a DNA molecule, describe DNA structure and gene function, define genome, recognise an application of genome knowledge, and explain variation and natural selection using snail examples.
Biology · B6: Inheritance, Variation and Evolution
- Question 2 13 marks
Describe the reflex arc pathway, plan a valid reaction time investigation comparing right and left hands, calculate a mean reaction time from a table, and evaluate evidence about whether playing tennis improves reaction time.
Biology · Required Practicals · B5: Homeostasis and Response · Biology Required Practicals
- Question 3 10 marks
Define biodiversity and explain how peat use, intensive farming, and widespread antibiotic use in farming can harm the environment and human life.
Biology · B3: Infection and Response · B7: Ecology
- Question 4 12 marks
Answer a set of short biology questions on meiosis, endocrine glands and hormones, and the advantages and disadvantages of asexual reproduction in geranium plants.
Biology · B5: Homeostasis and Response · B6: Inheritance, Variation and Evolution
- Question 5 11 marks
Complete Punnett squares and explain probabilities for sex inheritance and cystic fibrosis, then evaluate two embryo screening methods for choosing embryos without CF.
Biology · B6: Inheritance, Variation and Evolution
- Question 6 7 marks
Answer questions on three-domain classification, mass extinction timelines, and percentage increase using a graph of extinction events.
Biology · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 7 8 marks
Describe reasons for deforestation and its environmental effects, and explain in what ways calling forests 'the lungs of the planet' is correct and incorrect.
Biology · B4: Bioenergetics · B7: Ecology