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From Biolecture.org
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<p><span style="font-size:14px"><strong>1. What is the exact definition of aging?</strong></span></p>
<p>Aging means the process of becoming older. Usually age of individual can be counted from the time when it was born, and it is called real-time aging. Meanwhile, biological aging, as known as senescence, means the steady deterioration of cell characteristics that could function for continuing life activity. During the biological aging, cells' ability to maintain viability declines while tendency to be vulnerable to mortality growsafter maturation. (Processing)In sum, there are two kinds of definitions for aging - Real-time aging counted from time processing, and Biological aging counted by accumulation of cell malfunction.</p>
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