On April 19, 2011, Map Maker was added to the American version of Google Maps, allowing any viewer to edit and add changes to Google Maps. This provides Google with local map updates almost in real time instead waiting for digital map data companies to release more infrequent updates. 2012
The basic process of viral infection and virus replication occurs in 6 main steps. 1  Adsorption-virus binds to the host cell. 2  Penetration-virus injects its genome into host cell. 3  Viral Genome Replication-viral genome replicates using the host's cellular machinery.
According to the authors of âMolecular Biology of the Cell, 4th Edâ (Garland Science, 2002) such viruses can replicate inside both insect and host cells, ensuring a smooth transition from one to the other. Examples include the viruses that cause yellow fever and dengue fever. Viruses will then attach themselves to host cell surfaces. They do so by recognizing and binding to cell surface receptors, like two interlocking puzzle pieces. Many different viruses can bind to the same receptor and a single virus can bind different cell surface receptors. While viruses use them to their advantage, cell surface receptors are actually designed to serve the cell.