State at room temperature Illustration Play

Statements about melting points Illustration Play

Stellar absorption spectra Illustration Play

Stigma; eyespot Illustration Play

Stomach Illustration Play

Stomata Illustration Play

Stomata Illustration Play

Stomata Illustration Play

Stomatal transpiration Illustration Play

Storage functions Illustration Play

Strange network Illustration Play

Streamlining to reduce friction Illustration Play

Structural formula of monosaccharides – glucose Illustration Play

Structural formula of polysaccharides – glycogen Illustration Play

Structural polysaccharides Illustration Play

Structure and molar mass of polymers Illustration Play

Structure of a bird's egg Illustration Play

Structure of a cyanobacterium Illustration Play

Structure of a lichen Illustration Play

Structure of a liverwort Illustration Play

Structure of a moss sporophyte Illustration Play

Structure of a virus Illustration Play

Structure of acetylcholine and noradrenaline Illustration Play

Structure of cell membranes Illustration Play

Structure of echinoderms Illustration Play

Structure of Hydra Illustration Play

Structure of starch Illustration Play

Structure of the gills in bony fish Illustration Play

Structure of the nephron Illustration Play

Structure of the proximal convoluted tubule Illustration Play