0610/42 · May/June 2025
Theory (Extended) · 80 marks · 6 questions
- Question 120 marks
The gas exchange system and breathing in, protecting the airways, and a genetic diagram for cystic fibrosis.
- Question 214 marks
Identifying blood cells and their functions, and how pathogens are transmitted.
- Question 315 marks
Growth of GM maize, how genes are transferred by genetic modification, and the risks and benefits of GM crops.
- Question 410 marks
Adaptive features of xerophytes such as marram grass.
- Question 511 marks
Active uptake of nitrate ions by root hair cells, nitrogen fixation, and osmosis.
- Question 610 marks
Effect of pH on two proteases, denaturation, and where proteases act in the gut.