cellular structure. Ionizing radiation causes atoms and molecules to become ionized or excited. These excitations and ionizations can: * Produce free radicals. * Break chemical bonds. * Produce new chemical bonds and cross-linkage between macromolecules. * Damage molecules that regulate vital cell processes (e.g. DNA‚ RNA‚ proteins). The cell can repair certain levels of cell damage. At low doses‚ such as that received every day from background radiation‚ cellular damage is rapidly
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Answer: Radiation has a profound effect on matter. Particularly in forms where it has high energy. There are basically two kinds of radiation‚ and they are electromagnetic energy and particulate radiation. Low energy electromagnetic radiation isn’t generally hazardous‚ as long as the field strengths are low. You wouldn’t want to stand in front of a radar antenna when it’s radiating‚ but we are swept by low power electromagnet energy all the time. Those so-called radio waves are everywhere. Light
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Radioactivity computer research: Instructions and Questions [Note: Links to Bitesize websites may direct you to a ‘home’ page for Radiation and the Universe- click ‘Activity’ for Radioactive Substances and scroll through until you find the appropriate page] 1) Go to http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/radiation/radiocativerev1.shtml . What is an isotope? How many isotopes of hydrogen are there? An isotope is an atoms which are from the same element but have different numbers
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Lead poisoning is a health concern that can effect children of all socioeconomic backgrounds. It has been an issue for many years and instances of lead poisoning can be found throughout history in every country. Children under the age of six years of age and pregnant women are most at risk for lead poisoning (Lead Home‚ EPA.gov/lead). Lead can cause serious health problems if consumed. It is more common for lead to slowly build up in the body over time from repeated exposure to small amounts of it
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American homes concentrated in low-income areas. Studies have shown that lead is able to mimic certain metals that are significant in biological processes‚ leading to a collection of developmental and physiological conditions commonly grouped as “lead poisoning.” In brief‚ lead acts on small biological systems that affect a major system‚ an example of which are zinc-finger proteins. The zinc-finger‚ a common protein motif‚ relies on the coordination of Zinc (Zn) ions for the protein’s shape and stability;
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Doctors usually “use a simple blood test to detect lead poisoning” ("Lead Poisoning‚” Mayo Clinic). A small amount of blood is taken from a vein or a prick of one finger. The lead levels in the blood are tested and measured in micrograms per deciliter. Low level in adults are not concerning‚ but they can cause concern in small children ("Lead Poisoning‚” Healthline). “Normal” amounts of lead are different depending on the age of a person. In an adult‚
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Preparation Outline Public Speaking March 8‚ 2013 Specific Purpose: To inform my audience about radiation therapy. Central Idea: To clearly understand radiation therapy‚ you must know about the different types and side effects. Introduction During my life‚ I have seen how harsh cancer can be. It has took a toll of many people’s lives and changed families all over. I have witnessed it first hand as it has affected my family and has taken people from me who were very important. Experiencing
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Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
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The Causes and Effects of Radiation A Research Paper Presented to Mr. Ronel Ramos Alcasarin St. Catherine Academy In Partial Fulfillment Of the Requirements for ENGLISH IV By: Hazel Dianne S. Cagalawan March 2013 The Research Paper attaches hereto‚ entitled The Cause and Effects of Radiation Prepared and Submitted by: Hazel Dianne S. Cagalawan In Partial fulfillment Of the Requirements in ENGLISH IV is hereby accepted: Mr. Ronel Ramos Alcasarin
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One of their newest discoveries is that very low levels of lead‚ once thought to be harmless‚ can be damaging over long periods of time. Even though a child seems healthy‚ he or she may have enough lead in the blood to cause chronic lead poisoning. In the late 1970s‚ the researchers found that even a small amount of lead that is absorbed in the body‚ although absorption doesn’t cause physical illness could still harm a child’s nervous systems and brain. Lead is a true poison that has no
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