Exercice : 1/ Fill in the missing words: Archaea, molecular biology, bacteria, microorganisms,
After the discovery of---- microorganisms --------, scientists tried to classify them among the living beings. With the development of ------ molecular biology ---techniques. Woese CR in 1978 proposed a more precise classification based on an objective and phylogenetic criterion, he managed to divide living organisms in three areas. The domain of ---- bacteria ----or (Eubacteria) which is characterized by the presence of a cell wall with peptidoglycan, the domain of -- Archaea ----(Archaea) whose wall is distinct and different from that of eubacteria. The field of Eukaryotes which includes animals, plants, fungi (molds and yeasts) and protists.