[cs_content][cs_section bg_color=”hsl(0, 0%, 100%)” parallax=”false” style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]Read the passages and choose the best answer to each question. Answer all questions about a passage on the basis of what is stated or implied in that passage.

Time – 15 minutes

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EFFECTS OF IONIZING RADIATION

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1               Everyone on Earth is continually exposed to small, relatively harmless amounts of ionizing radiation, known as background radiation, from natural sources such as soil and rock. However, other types of ionizing radiation—x–rays, ultraviolet radiation from the sun, and alpha, beta, and gamma radiation emitted by radioactive isotopes—have the potential to harm the human body. Ionizing radiation has enough energy to remove one or more electrons from the atoms it hits to form positively charged ions that can react with and damage living tissue. Most damage occurs in tissues with rapidly dividing cells, such as the bone marrow, where blood cells are made, and the digestive tract, whose lining must be constantly renewed.

2              Exposure to ionizing radiation can damage cells in two ways. The first is genetic damage, which alters genes and chromosomes. This can show up as a genetic defect in children or in later generations. The second type of damage is somatic, which causes victims direct harm in the form of burns, miscarriages, eye cataracts, some types of leukemia, or cancers of the bone, thyroid, breast, skin, and lung. Small doses of ionizing radiation over a long period of time cause less damage than the same total dosage given all at once. Exposure to a large dose of ionizing radiation over a short time can be fatal within a few minutes to a few months later.[/column][/x_tab][x_tab active=”false”][/x_tabs][/cs_column][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/6″ style=”padding: 0px;”] [/cs_column][/cs_row][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”] [/cs_column][/cs_row][/cs_section][cs_section parallax=”false” style=”margin: 0px;padding: 0px 0px 15px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/3″ style=”padding: 0px;”][x_gap size=”50px”][/cs_column][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/3″ style=”padding: 0px;”][x_gap size=”50px”][x_button shape=”rounded” size=”x-large” block=”true” circle=”false” icon_only=”false” href=”https://jaimemiller.com/tasks/quiz-1-2/” title=”” target=”” info=”none” info_place=”top” info_trigger=”hover” info_content=””]Return[/x_button][x_gap size=”50px”][/cs_column][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/3″ style=”padding: 0px;”][x_gap size=”50px”][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” style=”margin: 0px;padding: 0px 0px 15px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/6″ style=”padding: 0px;”] [/cs_column][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”2/3″ style=”padding: 0px;”][x_line style=”border-top-color: hsl(222, 55%, 28%);border-top-width: 1px;”][cs_text]

This program and course are copyright of Delta Publishing and have been licensed to Jaime Miller Advising.

No part of this course may be shared, re-used, downloaded without permission.

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