The structure (abbreviated) of the polysaccharide cellulose, a major structural component of plant cell walls, wood. It is just an unbranched polymer of beta-glucose. Only a small fragment of the potentially infinite polymer is shown. Drawn in Inkscape. celulose polissacarídeo açúcar Celulose
The structure a triacyglicerol, a.k.a fat. This fat molecule possesses three identical, saturated fatty acid (palmitic acid) units, linked to a glycerol molecule. Drawn in Inkscape. gordura triglicérides triacilglicerol Molécula de gordura
A stylized representation of the DNA double-helix. Drawn in Inkscape. genética ciência gene Estilizado DNA
Chemistry instruments with a molecule background. remix de laboratório laboratório Imagem do laboratório
The abbreviated structure of the storage polysaccharide starch; just a short segment shown (starch is a long, potentially infinite, polymer of alpha-glucose molecules). Unbranched starch, like the one drawn here, is called amylose. Drawn in Inkscape. amido polissacarídeo açúcar Amido
The structure (abbreviated) of the structural polysaccharide chitin, a major component of the exoskeleton of arthropods (spiders, crustaceans, insects, etc.) and of the cell wall of fungi. It is similar to cellulose, but with a different side group on the carbon 2 of glucose. Absorbable surgical thread can be made of this material. Only a small fragment of the potentially infinite polymer is shown. Drawn in Inkscape. quitina polissacarídeo açúcar Quitina
The structure (abbreviated) of the hexose sugar alpha-glucose. Drawn in Inkscape. glicose molécula açúcar Glicose
The simplified "cloverleaf" tRNA structure (from genome sequence of the bacterium Gardnerella vaginalis, as predicted by tRNAscan) for the glycine amino acid (GCC anticodon). Drawn in Inkscape. transferência ciência biologia RNA de transferência
A simple balls-and-sticks model of a caffeine molecule. Oxygen is red, carbon is blue-grey, nitrogen gree; hydrogens not shown. Drawn in Inkscape. molécula modelo cafeína Molécula de cafeína
The structure (abbreviated) of the disaccharide sucrose, a.k.a. common sugar (the one used in the kitchen). It is the polymer of an alpha-glucose and a fructose units. Drawn in Inkscape. sacarose açúcar dissacarídeo Sacarose (açúcar)
The simplified "cloverleaf" tRNA structure (from genome sequence of the bacterium Gardnerella vaginalis, as predicted by tRNAscan) for the glycine amino acid (GCC anticodon). Different parts of the structure highlighted and tagged. Drawn in Inkscape. transferência ciência biologia RNA de transferência 2