Reproduction and variation Class activity Play

Reproduction and variation Whiteboard presentation Play

Reproduction in bacteria Animation Play

Resonance energy for benzene Animation Play

Restriction enzymes – accurate cuts Whiteboard exercise Play

Restriction enzymes – accurate cuts Student activity Play

Reversible and irreversible reactions Student activity Play

Reversible reaction Animation Play

Ribonucleic acid Animation Play

Ribose and deoxyribose Animation Play

Ribosomal RNA Slideshow Play

Role of anions in plant cells Slideshow Play

Role of macro-elements absorbed as anions Student activity Play

Rupture of the DNA molecule Slideshow Play

Salts of strong acids and weak bases Student activity Play

Salts of strong acids and weak bases Whiteboard exercise Play

Salts of weak acids and weak bases Student activity Play

Saturated and unsaturated compounds Animation Play

Saving DNA on a nitrocellulose membrane Whiteboard exercise Play

Selective breeding in animals Student activity Play

Selective breeding in rabbits Slideshow Play

Semi-conservative replication of DNA Whiteboard exercise Play

Semi-conservative replication of DNA Student activity Play

Sensors Animation Play

Sequence of bases in DNA Whiteboard exercise Play