Polipeptides and proteins Animation Play

Polymerase chain reaction Animation Play

Polymerase chain reaction (PCR) Animation Play

Producers and consumers in a typical food chain Illustration Play

Pyramids of numbers Student activity Play

Soaps Student activity Play

Stages of the polymerase chain reaction Whiteboard exercise Play

Straight carbon chain Whiteboard exercise Play

Structural isomerism: chain isomers Whiteboard exercise Play

Structural isomerism: chain isomers Student activity Play

Structure of a peptide chain Animation Play

The catenary Animation Play

The chain rule Animation Play

The chain rule Student activity Play

The chain rule Whiteboard exercise Play

The chain rule for more than two functions Student activity Play

The chain rule for more than two functions Animation Play

The flow of chemical energy through the food chain Animation Play

The isomerism of alkanes Animation Play

The octane rating of petrol Whiteboard exercise Play

The octane rating of petrol Student activity Play

The order of organisms in a food chain Whiteboard exercise Play

The passage of electrons through the electron transport chain Animation Play

The passage of electrons through the electron transport chain Student activity Play

The polymerase chain reaction Student activity Play