Shapes and arrangements of bacteria, a summary of their cell structure, the two kinds of cell wall, Gram staining, and how bacteria move and are classified in the laboratory.
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.