O Level Tutorials

This is the tutorials section of O level Biology. Listed below are the units under which we have posted tutorials so far.

  1. Cell Structure and Organisation
  2. Diffusion and Osmosis
  3. Enzymes
  4. Plant Nutrition
  5. Animal Nutrition
  6. Transport in flowering plants
  7. Transport in humans
  8. Respiration
  9. Excretion
  10. Homeostasis
  11. Coordination and Response
  12. Support, movement and locomotion
  13. The use and abuse of drugs
  14. Microorganisms and biotechnology
  15. Relationships of organisms with one another and with the environment
  16. Development of organisms and continuity of life