Sign In
All Lessons
Primary
Primary 1 - Early Level (3)
Primary 2 - First Level (1)
Primary 3 - First Level (2)
Primary 4 - First Level (3)
Primary 5 - Second Level (1)
Primary 6 - Second Level (2)
Primary 7 - Second Level (3)
Secondary
Maths
History
English
Chemistry
Biology
Geography
Modern Studies
Physics
Business Management
Contact
Cell Biology
Home
Lessons
Secondary
Biology
National 5 (S3/S4)
Cell Structure
Cell Ultrastructure and Cell Wall
Transport across cell membranes
Structure of Cell Membrane and Passive Transport (diffusion)
Passive Transport (Osmosis)
Active Transport
DNA and the production of proteins
Structure of DNA
Messenger RNA
Proteins
Protein Structure and Function
Enzymes
Genetic Engineering
Genetic Engineering
Respiration
Role of ATP, Aerobic Respiration & Fermentation
