System I: Ion Channels 1. What structures in the cell membrane function as ion channels? Integral Proteins 2. Ion channels are selective for specific ions. What three characteristics of the ions are important for this selectivity? 1. Charge 2. Size 3. 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 __________nongated______________ channel. 4. Would sodium ions move into
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Advanced Placement European History Unit 5 – Absolutism and State-building in the 17th Century Identifications People places events ideas institutions arts Social Phenomena Witches and witchcraft- witchcraft affected many lives of Europeans in the sixteenth and seventeenth century. Witchcraft was thought to be connected with the devil therefore making witchcraft heresy. Witch trials- More than 100‚000 people were prosecuted throughout Europe for witchcraft during the sixteenth
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Buffer solutions and common ion effect A buffer solution resists (or buffers) a change in its pH. That is‚ we can add a small amount of an acid or base to a buffer solution and the pH will change very little. How to calculate pH of buffer solution containing both acid and conjugate base? Dissociation constant definition 1.1 can be rearranged into or (note that due to sign change [A-] was moved to nominator). This is so called Henderson-Hasselbalch equation (or buffer equation)
Free PH Acid dissociation constant Buffer solution
Lab #3: Ion Exchange Chromatography Objective The purpose of this experiment was to separate proteins on the basis of their net charge at a particular pH. In cation exchange chromatography positively charged molecules are attracted to a negatively charged column. Conversely‚ in anion exchange chromatography‚ negatively charged molecules are attracted to a positively charged column. Experimental results could be monitored in a predictable way by controlling running pH‚ salt concentration‚ and by
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Name the minerals below. Then‚ insert a percentage of how certain you are in your identification. Finally‚ explain your percentage of certainty: What was confusing about this mineral? What other minerals do you think it could be? Remember‚ the minerals in the virtual lab include seven of the following: borax‚ calcite‚ corundum‚ graphite‚ gypsum‚ orthoclase feldspar‚ pyrite‚ quartz‚ talc‚ and topaz. Identification of Mineral Percent Certain Explanation of Certainty Example: Fluorite 80% certain
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Summary for Quiz Monday‚ May 30‚ 2005 12:13 AM Title Identification of Some Macromolecules Gist of Experiment • Use different tests to check for the existence of macromolecules in various substances o Iodine test checks for starch and/or glycogen o Benedict’s test checks for reducing sugars o Biuret test checks for protein Notes on Underlying Theory Introduction • The most abundant elements in living material are: o Carbon
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The name of the firm is A-Team Inventory Management Consulting. Members of The A Team are Leslie‚ Amy‚ Liz‚ Charlie‚ and Richard. Leslie will be in charge of Public Relations while Amy will be vice president of operations. Liz will have the role of chief analytics officer while Charlie will be responsible for director of marketing. Lastly‚ Richard will have the ever so desired role of chief financial officer. Together‚ the five members of the A-Team will also serve additional duties as the board
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I’m not as glamorous as I might seem. I’m just an ordinary student in 10th grade‚ who likes to learn things. Others may be more charismatic or handsome‚ but I have something that they do not. I posses an essential life skill; initiative. You (as the readers from the National Honors Society) may think that what I am saying is absurd‚ but I am here to prove my worth one paragraph at a time. I am a well educated individual who has repeatedly demonstrated initiative and high standards of reliability
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Part 1: Recording Observations In the chart below‚ record your observations of each test for the seven minerals. After you have completed all tests‚ name the minerals in Part 2 of this worksheet. An example of how to fill out the chart is illustrated below. |Recorded Observations for Minerals 1-7 | |Tests
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The Nervous System II: Ion Channels 1. List four neurotransmitters that bind to ion channels‚ these neurotransmitters are called __directly____-acting neurotransmitters. a. ACh b. glutamate c. GABA d. Glycine 2. a. The binding of ACh opens ion channels in the dendrites or cell body that permits both _sodium______ and _potassium____ to move through them. b. Which ion would move into the cell? _sodium____out of the cell? _potassium_____________ c. Which ion has the greatest electrochemical
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