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Topic: Biased random walk (biochemistry)

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	Random walk - Wikipedia, the free encyclopedia
		This is a random walk on a graph.
		In physics, random walks are used as simplified models of physical Brownian motion and the random movement of molecules in liquids and gases.
		Random walk can be used to sample from a state space which is unknown or very large, for example to pick a random page off the internet or, for research of working conditions, a random illegal worker in a given country.
	en.wikipedia.org /wiki/Random_walk (2461 words)

	Chemotaxis - Wikipedia, the free encyclopedia
		The overall movement of a bacterium is the result of alternating tumble and swim phases.
		If one watches a bacterium swimming in a uniform environment, its movement will look like a random walk with relatively straight swims interrupted by random tumbles that reorient the bacterium.
		It remains remarkable that this purposeful random walk is a result of simply choosing between two methods of random movement, namely tumbling and straight swimming.
	en.wikipedia.org /wiki/Chemotaxis (970 words)

	Encyclopedia :: encyclopedia : Cell biology (Site not responding. Last check: 2007-10-11)
		These fundamental similarities and differences provide a unifying theme, allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types.
		Research in cell biology is closely related to genetics, biochemistry, molecular biology and developmental biology.
		The Virtual Library of Biochemistry and Cell Biology
	www.hallencyclopedia.com /Cell_biology (479 words)

	Why I Believe In Creation
		Any introductory biochemistry textbook (for example, by Lehringer) explains how micelles form spontaneously by electrostatic interactions with water molecules (essentially, get some molecules that are polar on one side and non-polar on the other and you get membranous bubbles), so the cell membrane is easy to come by.
		Chemistry is not a random process - molecules do not bond randomly; their behavior conforms to specific attractive forces, and the presence of catalysts will affect reaction rates.
		Since 1 in 10^262 was derived from an analysis of random events, the simple fact that the events are not actually random voids the analysis.
	www.infidels.org /library/modern/alex_matulich/why_i_believe/4_cretin.html (16420 words)

	Evan's Earth Walk
		I walked around outside and started feeling buzzy and very sick and threw up over and over again, mostly the soup, although the soup was exceptionally delicious at the time.
		Then I took her on a walk up the old crossroads trail, the one on which the Bevier house was built, the one that used to go from the Esopus to the Rondout, and which crosses the great Minisink Trail at that spot.
		We walked a few hundred yards across a curious kind of natural pavement made of stone, towards the Rondout, towards Pompey’s Cave which is in an empty streambed, and which is at the Kyserike Burial Ground, the site of an old Lenape Village near the Rondout.
	evansearthwalk.blogspot.com (18476 words)

	Robust Biased Brownian Dynamics for Rate Constant Calculation -- Zou and Skeel 85 (4): 2147 -- Biophysical Journal
		The challenge of the random walk method is variance
		One difficulty that biased BD faces is that the particle weight
		Biased BD with weight control requires a bias force and a target
	www.biophysj.org /cgi/content/full/85/4/2147 (3754 words)

	John P. Marcus, biochemistry
		The orderliness of living things and their mind-boggling complexity are surely unmistakable indications that this creation did not come about by random and disorderly chance processes.
		It is such a simple deduction to make—it is obvious that an ordered structure such as a clay pot could not have come about by chance.
		Far from being educated guesses, the many deceptive evolutionary scenarios seem to be nothing short of biased myths arising from the desperate desire to exclude God from lives and consciences.
	www.answersingenesis.org /home/area/isd/marcus.asp (3148 words)

	[No title]
		After studying physics and biochemistry and gaining a PhD degree at the University of Orsay/Paris, Jean entered the Institut National de la Recherche Agronomique in 1969, where he worked for 35 years as a virologist.
		Jean devoted almost his entire professional career to the study of the structure and molecular biology of rotaviruses, a major cause of infantile gastroenteritis in humans and of diarrhea in the young of a large variety of animals.
		At the Institut Jacques Monod in Paris, he directed the biochemistry group in the Laboratory of Mutagenesis and was among the first in the field of DNA mismatch repair to establish a system for studying mismatch repair in a model organism.
	www.urbigene.com /foafexplorer/foaf.rdf (3228 words)

	Isolation and Characterization of Nonchemotactic CheZ Mutants of Escherichia coli -- Boesch et al. 182 (12): 3544 -- ...
		Random mutagenesis of cheZ was accomplished by passage of pKCB1, which carries cheYZ, through a strain defective in mismatch
		The random mutagenesis used to generate cheZ mutations that do not support chemotaxis was designed to obtain as large a pool
		on the randomness of the mutagenesis itself, the degree of saturation
	jb.asm.org /cgi/content/full/182/12/3544 (7123 words)

	Random Sociological Thoughts
		Tid-bits of sociological significance, biased musings about my worldview, trite expressions of brilliance, the anxiety of a humble epigone, or cryptic structures of exceptional lameness.
		I remember studying biochemistry, reading sections explaining such arcane phenomena as ribosomal construction of certain types of virus proteins, and getting to a point where the author began to explain that the reasons why this process occurs are “unknown.” Finally!!
		Two people walk into an office with a camera that is more or less similar, i.e., the camera is functional and takes a picture with similar accuracy and they have the same precision if the camera is used in the same way.
	postmodernist.blogspot.com (8065 words)

	A nonlinear stimulus-response relation in bacterial chemotaxis -- Stock 96 (20): 10945 -- Proceedings of the National ... (Site not responding. Last check: 2007-10-11)
		Center for Advanced Biotechnology and Medicine, Howard Hughes Medical Institute and Biochemistry Department, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, NJ 08854-5638
		It has been well over a century since the responses of bacteria to chemical stimuli were first documented by Engelman (1)
		walk that results in net migration up an attractant gradient.
	intl.pnas.org /cgi/content/full/96/20/10945 (1477 words)

	Blest with sons » Creation Science
		Pain is a red flag from your body that something is amiss and may need to be tended to.
		If the full text of the encyclopedia were to arrive in computer code from outer space, most people would regard this as proof of the existence of extraterrestrial intelligence.
		Once upon a time I was a biochemistry major, and I still enjoy learning deeper science than the viscosity of spilled apple juice when mixed with exploded diaper gel.
	www.blestwithsons.com /?cat=11 (5232 words)

	Creation-Evolution Headlines from the Bible-Science Association
		They describe how these “remarkable microscopic engines” are able to perform a biased random walk (like a ratchet), even though buffeted by Brownian (thermal) motion, and perform useful work.
		Take a walk in the woods this fall and just enjoy it without stressing yourself out on what survival value the colors have.
		They had an air of scientific respectability by appearing concerned about human suffering and economic prosperity, but their true motives were to be masters of human evolution, create a super-race, and exalt themselves as superior to those they viewed as defectives in the gene pool.
	www.creationsafaris.com /crev1001.htm (15435 words)

	Inaugural Article: A circuit for navigation in Caenorhabditis elegans -- Gray et al. 102 (9): 3184 -- Proceedings of ...
		walk (14–16) (J.M.G. and C.I.B., unpublished data), a
		a biased random walk, periods of relatively straight movement
		In a biased random walk, individual trajectories are not predictable.
	www.pnas.org /cgi/content/full/102/9/3184 (6032 words)

	Phototaxis in Halobacterium: A testcase for systems biology (Site not responding. Last check: 2007-10-11)
		Dieter Oesterhelt, MPI of Biochemistry, Dept. Membrane Biochemistry, Martinsried
		A major contribution was made by T. Nutsch (PhD thesis in the group of E.D. Gilles).
		As a motile organism, Halobacterium actively moves towards attractants and flees from repellents (by a technique called "biased random walk").
	www.biochem.mpg.de /oesterhelt/sigtrans/phototax_sysbio.html (994 words)

	The Book of Wishes
		You are walking down a path and come to a colorful stone.
		If I were to say the word "Claudia Schiffer" or "Brad Pitt" before asking men and women, respectively, to write down their wishes, I suspect the responses would have been quite different.
		Matt H. is a 21-year-old undergraduate student studying physics and biochemistry at the Florida State University.
	sprott.physics.wisc.edu /pickover/wishbook.htm (17211 words)

	Chemical Decoupling of ATPase Activation and Force Production from the Contractile Cycle in Myosin by Steric Hindrance ...
		Department of Chemistry and Biochemistry and the Molecular Biology Institute, University of California, Los Angeles, California 90095 USA
		The algorithm representing S1 dynamics is a biased random walk
		unbiased walks relaxed potential energy built up in the structure.
	www.biophysj.org /cgi/content/full/84/2/1047 (5587 words)

	CiteULike: Random Walks in Biology (Site not responding. Last check: 2007-10-11)
		<p>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.
	www.citeulike.org /user/chrn/article/453554 (170 words)

	Encyclopedia Overflow pages
		The concept that "small, random, heritable differences among individuals result in different chances of survival and reproduction - success for some, death without offspring for others - and that this natural culling leads to significant changes in shape, size, strength, armament, color, biochemistry, and behavior among the descendants" is a theoretical supposition.
		We may conclude that it is impossible that DNA and an opera singer could evolve out of a soup of gooey slime in a mostly hostile environment of random encounters among molecules.
		They did not necessarily fully comprehend Him on day one of their life of faith just like today we learn daily on how to walk with God, if we so choose to live.
	www.specialtyinterests.net /eop6.html (10411 words)

	Myosin learns to walk -- Mehta 114 (11): 1981 -- Journal of Cell Science
		leading head in the walking intermediate might be ADP bound.
		in the observed walking intermediate resembles that adopted
		By contrast, electron micrographs of walking intermediates (Walker et al., 2000)
	jcs.biologists.org /cgi/content/full/114/11/1981 (9355 words)

	Laboratory of Computational Chemistry and Biochemistry, Lausanne, Switzerland
		Laboratory of Computational Chemistry and Biochemistry, Lausanne, Switzerland
		Marc Fleurant: Random boolean network : genetic network and temporal evolution
		Leonardo Guidoni: Orbital Biased Molecular Dynamics: a Computational Tool to Make (some) Chemical Reactions
	lcbcpc21.epfl.ch /Seminars/oldsemi.html (494 words)

	Receptor sensitivity in bacterial chemotaxis -- Sourjik and Berg 99 (1): 123 -- Proceedings of the National Academy of ...
		Bacteria move up spatial gradients of chemical attractants in a biased random walk, now running smoothly, now tumbling randomly,
		Blat, Y. & Eisenbach, M. Biochemistry 33, 902-906
		Bornhorst, J. & Falke, J. Biochemistry 39, 9486-9493
	www.pnas.org /cgi/content/full/99/1/123 (3834 words)

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