The Orbit Molecular modelling set is easy to use and durable. The Biochemistry building system allows you to create accurate 3-D representations of amino acids, monosaccharides, glycerol, fatty acids, steroids, purines and pyrimidines, peptides, disaccharides, lipids, nucleosides, proteins, polysaccharides, nucleic acids.Suitable for use at Advanced and University levels of education, by student, teacher, researcher, or small group.The Orbit building system uses 1cm atoms, colour coded according to 12 different elements, with prongs set at the correct bonding angles.The set contains 255 atoms, 250 bonds and a 44 instruction booklet which covers all the structures above. Supplied in a sturdy box.