AQA AS Level Biology Paper 2, June 2022
Every question from AQA AS Level Biology Paper 2, June 2022 (7401): 9 questions, 75 marks, each with its mark scheme and topic.
- Question 1 7 marks
Define a gene, compare mRNA production in eukaryotic and prokaryotic cells, suggest how PNA affects transcription, and describe the role of ATP in translation.
Biology · 3.1 Biological molecules · 3.4 Genetic information, variation and relationships between organisms
- Question 2 8 marks
Answer questions on carbohydrates, reducing sugar tests using a colorimeter, controlled variables, mass calculation, and water potential changes in stored apples.
Biology · Practical skills · 3.1 Biological molecules · Experimental design · Data analysis
- Question 3 7 marks
Describe and explain how microvilli increase absorption rate, calculate the surface area ratio of an ileum cell with microvilli, and explain how a monoclonal antibody helps identify ileum cells using the ZO-1 protein.
Biology · 3.2 Cells · 3.3 Organisms exchange substances with their environment
- Question 4 8 marks
Describe meiosis, calculate expected chromosome arrangements due to independent segregation, draw gamete chromosomes, and identify a cell division process from a fungus life cycle.
Biology · 3.4 Genetic information, variation and relationships between organisms
- Question 5 10 marks
Analyze phylogenetic classification, relationships, and DNA base sequences of rhinoceros species across multiple structured sub-questions.
Biology · 3.4 Genetic information, variation and relationships between organisms
- Question 6 8 marks
Evaluate the effect of blood pressure treatments on reducing cardiovascular disease risk using data from provided graphs on heart blood volume, blood pressure correlation, and treatment changes.
Biology · Practical skills · Required Practicals · 3.3 Organisms exchange substances with their environment · Experimental design · Data analysis · AS practicals (1–6)
- Question 7 10 marks
Produce a scientific drawing of a leaf section, conclude and explain the effect of different factors on cut flower shelf life using table data, and suggest an environmental change to increase shelf life with explanation.
Biology · Practical skills · Required Practicals · 3.3 Organisms exchange substances with their environment · Data analysis · AS practicals (1–6)
- Question 8 7 marks
Suggest guppy behavior affected by brightly colored stones, propose a further investigation with a null hypothesis, and explain directional selection caused by predators on guppy spot number.
Biology · Practical skills · 3.4 Genetic information, variation and relationships between organisms · Experimental design
- Question 9 10 marks
Describe how the structure of the insect gas exchange system provides cells with sufficient oxygen and limits water loss, and describe how humans breathe in and out.
Biology · 3.3 Organisms exchange substances with their environment