AQA A-Level Biology Paper 1, June 2022
Every question from AQA A-Level Biology Paper 1, June 2022 (7402): 9 questions, 91 marks, each with its mark scheme and topic.
- Question 1 10 marks
Describe the structure and function of the nucleus, identify cell wall polymers, explain the use of biomass over individual counts in diversity measurement, calculate an index of diversity, and suggest how farming affects species diversity.
Biology · Practical skills · 3.2 Cells · 3.1 Biological molecules · 3.4 Genetic information, variation and relationships between organisms · Data analysis
- Question 2 10 marks
Explain antibiotic resistance in Clostridium difficile, identify a disaccharide formed from two glucose molecules, describe aseptic technique for transferring bacterial culture, and evaluate the effect of trehalose using graph data.
Biology · Practical skills · Required Practicals · 3.1 Biological molecules · 3.4 Genetic information, variation and relationships between organisms · Data analysis · AS practicals (1–6)
- Question 3 11 marks
Assess how antimicrobial polypeptides act on prokaryotic cell membranes, their structure, cross-sectional area calculation of channels, and their lack of effect on eukaryotic cells containing cholesterol.
Biology · Practical skills · 3.1 Biological molecules · 3.2 Cells · Data analysis
- Question 4 9 marks
Describe viral replication, compare cell cycles of mitosis and binary fission, complete a meiosis diagram showing non-disjunction, and evaluate a conclusion using data from a population study on meiotic errors.
Biology · 3.2 Cells · 3.4 Genetic information, variation and relationships between organisms
- Question 5 9 marks
Define quaternary structure, explain how two enzymes with different amino acid sequences can catalyse the same reaction, describe control tubes for this investigation, and state conclusions from Figure 8.
Biology · Practical skills · 3.1 Biological molecules · Experimental design · Data analysis
- Question 6 10 marks
Explain the rate of transpiration, calculate percentage increase from a graph, and describe an experiment to investigate water potential in mangrove root cells.
Biology · Practical skills · 3.3 Organisms exchange substances with their environment · 3.1 Biological molecules · Data analysis · Experimental design
- Question 7 8 marks
Complete a table to give three differences between DNA and tRNA molecules, describe how to remove large organelles from a cell suspension by centrifugation, and explain the positions of ribosome bands in tubes A and B after ultracentrifugation with and without detergent.
Biology · 3.1 Biological molecules · 3.2 Cells
- Question 8 9 marks
Analyze fish gill structure, surface area-to-volume calculations, gas exchange effects of cell division, and differences between single and double circulatory systems.
Biology · 3.2 Cells · 3.3 Organisms exchange substances with their environment
- Question 9 15 marks
Describe the transport of carbohydrates in plants, compare and contrast the structure of starch and cellulose, and describe the complete digestion of starch in mammals.
Biology · 3.1 Biological molecules · 3.3 Organisms exchange substances with their environment