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. cellulose polysaccharide sugar Cellulose
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. fat triglyceride triacylglycerol Fat molecule
A stylized representation of the DNA double-helix. Drawn in Inkscape. dna genetics science Stylized DNA
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. starch polysaccharide sugar Starch
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. chitin polysaccharide sugar Chitin
The structure (abbreviated) of the hexose sugar alpha-glucose. Drawn in Inkscape. glucose molecule hexose Glucose
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. rna transfer trna Transfer RNA
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. molecule model caffeine Caffeine molecule
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. sucrose sugar disaccharide Sucrose (sugar)
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. rna transfer trna Transfer RNA 2