1 A2/A-level Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter A2/A-level SubjectClear filter Biology Exam board WJEC TopicClear filter Human, animal and plant behaviour Human, animal and plant physiology The Kidney The Nephron Ultrafiltration Resources Revision Notes Ultrafilteration in the Bowman's Caspule A2/A-level, Biology Revision notes 2.0 / 5 Search again