O LEVEL BIOLOGY NOTES AND PAST PAPERS Uganda. It consists of all the notes and questions and answers according to the Ugandan syllabus. With well explained answers from professional teachers. Topics include O-level Biology notes. Classification, Soil, Respiration. Autotrophic Nutrition (O-level) · Cell division (o-level) · Cell Physiology (diffusion, osmosis, active transport) (O-level). Get every thing you want to know about O’level biology . Notes , past papers , Quizzes and all revision questions needed to pass biology. pass U.C.E exams.