Death of a Tumor Essay

2082 Words 9 Pages
Cell Background

Animal cells are eukaryotic and have a very complex structure. A eukaryotic cell is composed of many membrane-enclosed organelles. Organelles are compartments that perform different functions inside the cell. An organelle called the nucleus contains the genetic material, or DNA, and is the most vital organelle of the cell because it is responsible for carrying the genes that make up the body. A cell's membrane is composed of two layers that regulate the flow of materials in and out of the cell. Along the membrane are several kinds of receptor proteins that detect foreign materials. A cell replicates by a process called mitosis. In this process the chromosomes pair up and when the cell divides
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Eating healthy will decrease the risk of certain kinds of cancer. A poor diet with little exercise increases these risks, although the specific kinds of cancer that develops is not quite understood. Diets that are high in fat and low in fiber have been known to cause colon cancer and this can easily be prevented by watching what you eat. Some STDs like HPV can cause cancer, so protected sex or abstinence should always be practiced. Certain cancers can be caused from the environment or in the workplace. For example, radon gas has been known to cause lung cancer. It can be found in tightly sealed energy-efficient houses, and also houses with basements. This can be avoided by purchasing a detector for your home. Radiation from x-rays has a low chance of causing cancer, but in high doses over a long period of time, it could possibly cause cancer. How Tumors Survive Tumors are generally caused by mutations in several genes that regulate cell division. Without the necessary regulatory factors, cells divide continuously and form clumps of abnormal cells called tumors. Mutations can be caused over time. For example, prolonged exposure to the sun will cause mutation in the genes in the cells of the skin and cause skin cancer. Oncogenes are mutated versions of the proto-oncogene, and code for cancerous cells when the mutation occurs. These genes cause cancer because they are involved with the signaling the cell receives that tell it when to

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