Light-sensitive structure of the eye Slideshow Play

Lipids – the energy source of the cell Student activity Play

Liquid Animation Play

Liver and pancreas Animation Play

Lone electron pairs affect the shape of the molecule (1) Student activity Play

Louis Pasteur's experiment Student activity Play

Lowering of activation energy Student activity Play

Lung diseases caused by smoking Slideshow Play

Lung structure Whiteboard exercise Play

Lung structure Student activity Play

Lysozyme Slideshow Play

Macromolecular crystals Student activity Play

Made and not made up of cells Slideshow Play

Matter and its structure Slideshow Play

Mean bond enthalpies and interactions between bonds Student activity Play

Mean bond enthalpy Student activity Play

Mechanical digestion Animation Play

Mechanical digestion Student activity Play

Mechanism of enzymatic reactions Student activity Play

Mechanisms of interaction between enzyme and substrate Animation Play

Medical applications of genetic engineering Whiteboard presentation Play

Medical applications of genetic engineering Class activity Play

Melting and boiling points (2) Student activity Play

Melting and boiling points of sodium, magnesium and aluminium Animation Play

Metabolic transformations in a cell Whiteboard presentation Play