1. Compare and contrast prokaryotic cell, eukaryotic cell, and virus. (30 points) We are not sure whether weather viruses are considered living or not. They do not grow or develop, obtain or use energy, or respond to the environment. These are all requirements for living. They do not contain cells and are not generally considered cells. Their nucleic acid is DNA or RNA. They have no nucleus, ribosomes or mitochondria, nor binary fission nor mitosis/meiosis. Their outer surface is a protein capsule. Viruses require a host organism to live and reproduce. Unlike viruses, both prokaryotic and eukaryotic cells both live. Eukaryotic cells are what we are made of. Animals are also made up of these cells. They consist of membrane-enclosed organelles including a true nucleus containing a nuclear membrane and nuclei. These cells can be unicellular or multicellular. These cells contain complex flagella made up of multiple microtubules. In eukaryotic cells the polysaccharide coating is present only in some cells that do not contain a cell wall, a cell wall not always present when it is chemically simple. The plasma membrane of the cell contains sterols and In 2008, an epidemic of SARS (severe acute respiratory syndrome) occurred in Hong Kong, affecting approximately 800 people. It was an epidemic because it was mainly confined to one region. A pandemic is an epidemic that affects a large percentage of the population in a large geographic area. The influenza virus, also known as the Spanish flu, began in Kansas in 1918 and within a couple of months the disease spread from North America to Europe, Asia, Africa, South America and then new back. As the disease has traveled to multiple countries around the world, it is considered a pandemic. This pandemic lasted from 1918 to 1919 and caused approximately twenty million deaths