A proof for rapid exchange of hydrogen atoms in hydroxyl groups Slideshow Play

Antibiotic resistance Student activity Play

Arterioles and capillaries Student activity Play

Collision theory Class activity Play

Collision theory Whiteboard presentation Play

Communication – bilateral exchange of information Whiteboard exercise Play

Communication – bilateral exchange of information Student activity Play

Defence mechanisms in plants Slideshow Play

Development of the embryo Student activity Play

Development of the embryo Simulation Play

Evolutionary mechanisms within a population Student activity Play

Evolutionary mechanisms within a population Whiteboard exercise Play

Exchange mechanism in capillaries Animation Play

Exchange of food, oxygen and waste Animation Play

Exchange of heat and temperature Animation Play

Exchange of heat between organisms and their environment Student activity Play

Exchange of heat between organisms and their environment Simulation Play

Exchange of substances with the external environment Animation Play

Free-radical substitution – the mechanism Whiteboard exercise Play

Free-radical substitution – the mechanism Student activity Play

Gas exchange Student activity Play

Gas exchange Whiteboard exercise Play

Gas exchange between the lungs and blood Animation Play

Gas exchange in an alveolus Animation Play

Gas exchange in humans Animation Play