ConceptConceptDocsDocuments

CAIE A-Level Biology 4.2.2 Investigating Diffusion and Osmosis

Practise varying one concentration or dimension in tissue, tubing or agar tests, controlling conditions and using repeated mass, length or penetration changes to explain movement.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • change one concentration or size while controlling time, temperature and sample dimensions
  • measure initial and final mass, length or diffusion distance with appropriate precision
  • use repeats and percentage change before explaining results through gradients and permeability

No Question Bank Yet

Questions will appear here when available.