Хлорофилът е светлочувствителен зелен пигмент, който се намира в растенията. Той поглъща...
Oxygen carrier protein in our red blood cells.
A biologically and practically important organic compound.
One of the 20 amino acids that make up proteins. Its amino group and the 3rd carbon atom...
A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.
A basic heterocyclic organic compound; a colourless, pungent toxic liquid.
A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.
An exercise about the groups and structure of organic nitrogen compounds.