58 research outputs found
Information storing by biomagnetites
Since the discovery of the presence of biogenic magnetites in living
organisms, there have been speculations on the role that these biomagnetites
play in cellular processes. It seems that the formation of biomagnetite
crystals is a universal phenomenon and not an exception in living cells. Many
experimental facts show that features of organic and inorganic processes could
be indistinguishable at nanoscale levels. Living cells are quantum "devices"
rather than simple electronic devices utilizing only the charge of conduction
electrons. In our opinion, due to their unusual biophysical properties, special
biomagnetites must have a biological function in living cells in general and in
the brain in particular. In this paper we advance a hypothesis that while
biomagnetites are developed jointly with organic molecules and cellular
electromagnetic fields in cells, they can record information about the Earth's
magnetic vector potential of the entire flight in migratory birds.Comment: 17 pages, 3 figure
Origins of cellular geometry
Cells are highly complex and orderly machines, with defined shapes and a startling variety of internal organizations. Complex geometry is a feature of both free-living unicellular organisms and cells inside multicellular animals. Where does the geometry of a cell come from? Many of the same questions that arise in developmental biology can also be asked of cells, but in most cases we do not know the answers. How much of cellular organization is dictated by global cell polarity cues as opposed to local interactions between cellular components? Does cellular structure persist across cell generations? What is the relationship between cell geometry and tissue organization? What ensures that intracellular structures are scaled to the overall size of the cell? Cell biology is only now beginning to come to grips with these questions
Control of germ cell nuclear behaviour at fertilization by Tetrahymena intermediate filament protein
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