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Discuss how data was stored in flat files in the past. Explain the disadvantages associated with the flat file organization.
Nephron
The functional unit of the kidney, responsible for filtering blood and producing urine.
Microvilli
microscopic cellular membrane protrusions that increase the surface area for absorption, especially in the epithelial cells of the intestines.
Proximal Convoluted Tubule
The portion of the nephron in the kidney involved in the reabsorption of water, ions, and nutrients from the filtrate.
Active Transport
The movement of substances across a cell membrane against their concentration gradient, requiring energy in the form of ATP.
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