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Author Question: The process of allowing substances into and out of the cell is controlled by the ________. (Read 27 times) |
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.