The Nervous System: Ion Channels 1. What structures in the cell membrane function as ion channels? Intergral Proteins 2. Ion channels are selective for specific ions. What three characteristics of the ions are important for this selectivity? a. Charge on ion (+ or -) b.Size c. The amount of water the Ion attracts 3. Channels can be classified as either gated or nongated channels. A sodium channel that is always open would be classified as a/an non-gated channel. 4. Would
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Juan Ibarra 2/13/07 Professor Anu Vuorikoski Bus 173A - Intermediate Financial Management Chapter 8: mini case a. Why are ratios useful? What are the five major categories of ratios? Ratios are useful to evaluate a firm’s financial statements and one can also compare their performance with other firms‚ or the industry average. The five major categories for ratios are as follow: i. Liquidity Ratios: measures the liquidity of the firm’s current
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To What Extent does the Sugar Concentration of Water Affects Its Refractive Index? 1. Introduction 1.1 Background Why do object when placed in a bucket of water bend? This is not magic but it is a property of light known as refraction. The bending of light when it travels from one medium to another is known as refraction. Different mediums have different densities and density is defined as the amount of mass per unit volume. The higher the density‚ the higher is the
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Food Chemistry 138 (2013) 227–233 Contents lists available at SciVerse ScienceDirect Food Chemistry journal homepage: www.elsevier.com/locate/foodchem Analytical Methods Determination of volatile N-nitrosamines in meat products by microwave-assisted extraction coupled with dispersive micro solid-phase extraction and gas chromatography – Chemical ionisation mass spectrometry Man-Chun Huang‚ Hsin-Chang Chen‚ Ssu-Chieh Fu‚ Wang-Hsien Ding ⇑ Department of Chemistry‚ National Central
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HawaiiAnchialine Pools: T: Julia Russo and Linds Hawaiian Anchialine Pools: ʻŌpae ʻUla The ʻōpae ʻula and the Hawaiian anchialine pools have been a large part of Hawaii’s environment. We chose this topic because we wanted to learn about a Hawaiian species because we were both raised in Hawaii‚ and that the ʻōpae ʻula is endemic to Hawaii. We chose to do a poster board so we could reflect and make the things that we say easy to remember. In the Waianapanapa Cave‚ people are putting guppies and
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Reshmi Nair Title: Determination of Aspirin through back titration. Aim: To determine the concentration of Aspirin in a tablet using NaOH and Hcl. Research Question: What is the concentration of Aspirin in a normal tablet? Background: Aspirin is the general name for acetylsalicylic acid (ASA); it is also the trademark of the drug produced by Bayer in Germany. In eighty countries‚ aspirin is a registered trademark‚ but in other places the term aspirin refers to ASA by itself or as an ingredient
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Title: Prep of t-Butyl Chloride via SN1 Reaction Purpose: The purpose of this experiment is to synthesize tert-butyl chloride via an SN1 reaction. t-Butyl Chloride was synthesized from t-Butyl Alcohol using hydrochloric acid in separatory funnel; isolation of t-Butyl Chloride was done under distillation conditions. The experiment resulted in 8.29grams of purified compound‚ which is a 66.27 percent yield. Procedure: As per handout with changes Equation: Mechanism: Results: (Scan
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Most people are aware of the benefits and drawbacks of chlorine in pool; however‚ not many people know about the benefits and drawbacks of high levels of fluoride in pools. For several years‚ fluoride has been added to water to prevent tooth decay. In fact‚ in many areas it is considered an obstruction to public health to not add fluoride to water. However‚ not many people are convinced about the benefits of fluorinated water. These people are of the view that fluorine in limited quantities is good
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------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- EXPERIMENT NO. 4 ------------------------------------------------- COLORIMETRIC DETERMINATION OF pH ------------------------------------------------- Abstract This experiment examined the result of the various color indicators combined with different buffer solution‚ thereby testing the precision and accuracy of determining the pH value
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The water is calm and undisturbed‚ not a ripple in the pool. A rush of ice water envelopes my body as I dive into the pool. I open my eyes and wait for them to focus in my new environment. As I come up for air‚ I smell the strong scent of chlorine around me. As I begin my first set of laps‚ water rushes into my mouth as I come up for air‚ the taste of chlorine is soon stuck in my mouth. Half way through my second lap‚ I hear the sounds of splashing and what sounds like cannonballs as people begin
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