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Random walks in biology
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This book is a lucid, straightforward introduction to the concepts and techniques of statistical physics that students of biology, biochemistry, and biophysics must know.Abstract:
This book is a lucid, straightforward introduction to the concepts and techniques of statistical physics that students of biology, biochemistry, and biophysics must know. It provides a sound basis for understanding random motions of molecules, subcellular particles, or cells, or of processes that depend on such motion or are markedly affected by it. Readers do not need to understand thermodynamics in order to acquire a knowledge of the physics involved in diffusion, sedimentation, electrophoresis, chromatography, and cell motility--subjects that become lively and immediate when the author discusses them in terms of random walks of individual particles.read more
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Journal ArticleDOI
SNARE-driven, 25-millisecond vesicle fusion in vitro.
TL;DR: Docking and fusion were quantitatively similar on syntaxin-only bilayers lacking SNAP25, and in vitro fusion driven by SNARE complexes alone remains approximately 40 times slower than the fastest, submillisecond presynaptic vesicle population response.
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Oxygen and the Spatial Structure of Microbial Communities
Tom Fenchel,Bland J. Finlay +1 more
TL;DR: It is shown that the ambiguous relation to oxygen is both an evolutionary force and a dominating factor driving functional interactions and the spatial structure of microbial communities, particularly in microbial communities that are specialised for life in concentration gradients of oxygen.
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Charged polymer membrane translocation
TL;DR: In this article, the authors derived an expression for the free energy as a function of the number of polymers passing through a narrow pore in a membrane using the Smoluchowski equation.
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Shifts in mass scaling of respiration, feeding, and growth rates across life-form transitions in marine pelagic organisms.
Thomas Kiørboe,Andrew G. Hirst +1 more
TL;DR: It is argued that the declining mass-specific clearance rates with size within taxa is related to the inherent decrease in feeding efficiency of any particular feeding mode, and the transitions between feeding mode and simultaneous transitions in clearance and respiration rates may represent adaptations to the food environment.
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The development of concentration gradients in a suspension of chemotactic bacteria
TL;DR: The model is found that, for both shallow and deep chambers, a thin boundary layer, densely packed with cells, forms near the surface, and in the deep chamber cases, a discontinuity in the cell concentration arises between this cell-depleted region and a cell-rich region further below, where no significant oxygen concentration gradients develop before the oxygen is fully consumed.