Phagocytosis forms a vesicle around the organism or nutrients absorbed. Enzymes in what is known as a lysosome would then be engulfed by the vesicle, digesting it. However, if a cell with a faulty immune system were to absorb the energy radiating from the semi-permeable membrane, it would benefit and divide more quickly and efficiently than other bacteria, creating a more complex eukaryote. The Miller-Urey experiment is the best possible representation of abiogenesis, creating 25 amino acids from inorganic compounds, and the observation of protocells and the Endosymbiont Theory explains the evolution of basic life into more complex life.