Radicals

... all you need is restricted rotation about some bond isomerization may occur at diverse conditions, e.g. organic solvent, high energy (light), radicals, enzymes

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... reproductive organ weights, sperm motility, early embryonic development, and pregnancy success. At the cellular level, an increase in free radicals and [Ca2+]i may mediate the effect of EMFs and lead to cell growth inhibition, protein misfolding, and DNA breaks. The effect of EMF exposure ...

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Look at this article, reliability theory of aging, it seems to be a little more fundamental than just causative theories like free radicals, etc. http://www.news-medical.net/news/2004/10/04/5271.aspx

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Other useful search terms include: free radicals somatic mutations lamin A, progerin There are various factors that contribute to aging of a cell. I don't think you'll find a single switch that explains it all. An interesting topic in aging is ...

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... envelope- What do they mean by perforate in this case? - Peroxisomes- They carry out a wide range of reactions including detoxification of oxygen radicals- What do they mean by oxygen radicals? - The internal compartments of chloroplasts are formed from membranes and the whole structure is surrounded ...

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