Unit 5 · Animal Form and Function
External and internal respiration driven by partial pressure gradients, how haemoglobin carries oxygen, and how the medulla controls the rate and depth of breathing by negative feedback.
Deshapriya Senevirathne. B.Sc. (Hons) Biology Special, University of Peradeniya — graduated with a class pass. All the content and lessons in A/L Biology on Paadama are reviewed by Deshapriya Senevirathne, and the lessons are taught by him.