AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2018
Every question from AQA GCSE Combined Science: Trilogy Biology Paper 2 (Higher), 2018: 7 questions, 70 marks, each with its mark scheme and topic.
- Question 1 15 marks
Investigate how light intensity affects the distribution and percentage cover of small plants growing under and around a tree, including classifying factors, identifying equipment, calculating sampled area, and interpreting results.
Biology · Required Practicals · B7: Ecology · B4: Bioenergetics · Biology Required Practicals
- Question 2 6 marks
Explain what advice doctors should be given to prevent the spread of a new antibiotic-resistant strain of Pseudomonas bacteria.
Biology · B3: Infection and Response · B6: Inheritance, Variation and Evolution
- Question 3 8 marks
Identify why cave microorganisms are extremophiles, use enzyme activity graphs to determine which enzyme is from the cave microorganism and justify the choice, then describe the three-domain classification system and suggest why most cave microorganisms belong to Archaea.
Biology · B6: Inheritance, Variation and Evolution
- Question 4 10 marks
Answer questions about a reflex arc, including naming parts of the pathway, comparing signal transfer in neurones and synapses, explaining why conscious actions are slower than reflexes, calculating transmission time, and describing the relationship between age and muscle contraction time.
Biology · B5: Homeostasis and Response
- Question 5 8 marks
Describe how selective breeding could produce the IR8 rice variety and explain why some people agree and others disagree with growing GM rice plants.
Biology · B6: Inheritance, Variation and Evolution · B7: Ecology
- Question 6 8 marks
Calculate the rate of increase in LH concentration from a hormone graph, describe the sequence and sources of hormonal interactions in the menstrual cycle, and suggest an advantage of a progesterone patch over an oral contraceptive.
Biology · B5: Homeostasis and Response
- Question 7 15 marks
Answer multiple questions about oyster chromosomes, meiosis, triploid oysters, population decline and evaluate the production of triploid oysters for food.
Biology · B6: Inheritance, Variation and Evolution · B7: Ecology