Beginning of Essay
The Whether the source of radiation is natural or man made, whether it is a small dose of radiation or a large dose, there will be some biological effects. Radiation causes ionizations of atoms, which will affect molecules, which may affect cells, which may affe ....

Middle of Essay
.... referred to as a direct effect. Such interaction may affect the ability of the cell to reproduce and, thus, survive. If enough atoms are affected in such a way that the chromosomes do not replicate properly, or there is a significant alteration in the information carried by the DNA molecule, then the cell may be destroyed by “direct” interference with its life-sustaining system. Indirect effects are caused by the reaction of radiation with the water that makes up the majority of the cells volume. When radiation interacts with water, it may break the bonds that hold the water molecule together. This produces fragments of hydrogen and hydroxyl ....