MOLECULES and IONS in the cells. PLASMAMEMBRANE: lipids, proteins and glucides; TRANSPORT MECHANISMS. GLYCOCALIX: cell recognition and adhesion. RECEPTORS and SIGNAL TRANSDUCTION. NERVE IMPULSE. JUNCTIONS between epithelial/non epithelial cells and EXTRACELLULAR MATRIX of CONNECTIVE TISSUES. Endomembranes. ENDOPLASMIC RETICULUM. Ribosomes. GOLGI APPARATUS. LYSOSOMES, peoxisomes. Endocytosis and exocytosis; secretion types.MITOCHONDRIA. CYTOSKELETON: microtubules, intermediate filaments, microfilaments and plasmamembrane interactions. CONTRACTILITY (muscle/non muscle cells). LEUCOCYTE MIGRATION and defence mechanisms. NUCLEUS: envelope, lamina; pores and trafficking; hetero-euchromatin, nucleolus. CELL CYCLE: phases and its regulation. APOPTOSIS.