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A Summary Ion Channels In The Membrane
869 wordsA Summary: Ion Channels in the Nerve-Cell Membrane In this article, Richard D. Keynes details the workings of ion channels in nerve cell membranes. Nerve impulses (action potentials) are the unit by which information travels in an organisms nervous system, and the generation of this action potential is dependent on the nerve membrane being permeable to ions which in turn makes said membrane excitable. Electrical activity of a nerve is triggered by a depolarization across the membrane and this al...
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Molecular Biology Membrane Potential
1,317 words... that span the membrane. Class 5. Lipid Anchored These proteins undergo substitution with the carbohydrate groups of glycolipids, therefore binding covalently with the lipid. This classification is not definitive in including all proteins, since there may well be other examples that span the membrane with different numbers of anchor chains. The structure of proteins varies greatly. The first factor affecting structure is the proteins function, but equally important is the proteins location, a...
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Active Transport Membrane Potential
2,258 wordsEffects Of Solutions On Ion Transport Across Membranes Abstract Concentration gradients exist between two different salt molarity solutions on opposite sides of a membrane. Movement of ions across these sides can be achieved by either active or passive diffusion. In our first three experiments we used these concentration gradients to determine the characteristics of selective permeability of an artificial membrane to potassium chloride (KCl), the potential difference across the skin of a frog, R...
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Fight Or Flight Sleep Paralysis
1,937 wordsFear-Induced Hallucination: How Sleep Paralysis Triggers Hallucination I researched the web to find out how hallucination starts during an episode of Sleep Paralysis. As I have written in my previous paper, a Sleep Paralysis, although often believed as an evils work, results from some errors of the neural transmission in the brain during REM sleep (1). During a frightening state of Sleep Paralysis, one experiences total body immobility and cannot speak or move besides little eye movements and re...
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Plasma Membrane Membrane Potential
2,379 wordsInvolvement of K+ in Leaf Movements During Sun tracking Introduction Many plants orient their leaves in response to directional light signals. Heliotropic movements, or movements that are affected by the sun, are common among plants belonging to the families Malvaceae, Fabaceae, Nyctaginaceae, and Oxalidaceae. The leaves of many plants, including Crotalaria pallida, exhibit dia heliotropic movement. C. pallida is a woody shrub native to South Africa. Its trifoliate leaves are connected to the pe...
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