9700/22 · May/June 2025
AS Level Structured Questions · 60 marks · 6 questions
- Question 114 marks
Root hair cell structures, and the symplast and apoplast pathways for water crossing the root.
- Question 27 marks
Haemoglobin as a globular protein, and the substances involved in carrying oxygen and carbon dioxide in blood.
- Question 310 marks
Galactose compared with α-glucose, and analysing sugar content data for carrot varieties.
- Question 412 marks
Tuberculosis: the pathogen, transmission, antibiotic treatment, and identifying airways and blood vessels in lung tissue.
- Question 57 marks
Using antibodies on magnetic beads to collect stem cells, and making artificial red blood cells.
- Question 610 marks
Non-competitive inhibition and Km for horseradish peroxidase, and start and stop codons in a synthetic gene.