Chemical composition and organization levels of the living material. Chemicals elements significant for life. Covalent and weak binding. Water. Hydrogen binding. Carbon and the functional groups. Fundamental biological macromolecules: carbohydrates, lipids, proteins and nucleic acids. The living organism kingdom. Cellular theory. Cellular organization models: prokaryotes and eukaryotes. Structure of the animal cell. Nucleous, ribosomes, endoplasmatic reticulum, Golgi apparatus, lisosomes, mythocondria. Anaerobic and aerobic respiration. Plasmatic membrane: structure and dynamic functions. Cytoscheleton and cellular movement. Cellular junctions.The structure, replication and repair of DNA. Organization levels of cellular DNA: chromatin and chromosomes. RNA transcription and maturation. Genetic code, translation and protein synthesis. Regulation of the genic expression. Cellular reproduction. Regulation of the cellular cycle. Mytosis. Meiosis. Genetic variability mechanism, homologous rearrangement, crossing over, fecondation causality. Sexual and asexsual reproduction of organisms: gametogenesis, fertilization, embrional development and genetic basis of development. Mendel laws. Genothype. Phenothype. Sexual chromosomes and sex-linked heredity. Mutations.