SCIE211 Phase 2 Lab Report Title: Speciation Instructions: You will need to write a 1-page lab report using the scientific method to answer the following question: • What would happen if a species within a population were suddenly split into 2 groups by an earthquake that creates a physical barrier like a canyon? When your lab report is complete‚ post it in Submitted Assignment files. Part I: Use the animated time progression of speciation to help you write up your lab report. Part II: Write
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mL of methanol to wash column and collect any desorbed material. 6.Remove solvent now by evaporation. Heat solvent and voil it off. 7. when crystals are dry‚ determine weight and melting point. 8. Melting point will tell you what active ingerdediant you are dealing with‚ confirm it through recording IR spectrum and then compare to online. 9. Run a TLC plate of isolated against solution of known compount. Eluent used is ethyl acetate containing .5% acetic acid. Spot reference
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Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex: volume)
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Introduction In this Lab the students dealt with Osmosis‚ movement of water molecule or solvent from a high concentration to a low concentration‚ through selective permeability‚ a protective barrier that provide some particle the ’direct ’ passage in and out of the plasma membrane ( Lacerda L.2011) Allowing some molecules enter and exit the cell membrane‚ to create a balance in concentration inside and outside of the cell‚ by doing so the cell often become hypotonic‚ where the concentration
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Analysis: Which sample do you suspect has diabetes mellitus? Provide your reasons. Diabetes mellitus is a condition created by the inadequate secretion of insulin from the pancreas. Insulin is a hormone that allows your body to use carbohydrates or store them for future use. Inadequate amounts of insulin causes a condition called hyperglycemia‚ which is an excessive amount of glucose in the blood stream. When the blood is filtered through the kidney‚ a large of amount of glucose is retained in the
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Water Transport The movement of plants from water to land has necessitated the development of internal mechanisms to supply all the parts of the plant with water. As discussed in Plant Classification‚ Vasular Tissues ‚ tracheophytes (including virtually all terrestrial plants except for mosses and liverworts)‚ have developed complex vascular systems that move nutrients and water throughout the plant body through "tubes" of conductive cells. The vascular tissues of these plants are called xylem
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things move from a higher concentration to a lower concentration‚ it is known as diffusion. As long as diffusion is permitted to go on‚ equilibrium will be reached. Equilibrium is when two areas have reached equal concentration levels. The egg in this lab will have water and substances diffusing though it in and out. The direction‚ in which things diffuse‚ depends on the type of solution the egg is placed in. A hypertonic solution isa solution that is outside the cell and it has lower free water molecule
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(a) Failing to stir or shake the dichloromethane and Panacetin mixture long enough would lead to a variable amount of undissolved Panacetin‚ which could be left on the filter paper during gravity filtration‚ thereby increasing the mass of sucrose. This could also lower the percent compositions of aspirin and the unknown because less Panacetin would be present than if all of the Panacetin was dissolved in the dichloromethane. (b) Failing to mix the
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Physics Lab Report Format General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results. Part of your lab experience should be learning how to organize and present your work in a scientific way. There is no framework that can be used as a “one size fits all”‚ therefore this sample lab report should only be used as an example. Any lab report should have the following features:
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Introduction Adenosine triphosphate‚ also known as ATP‚ is the supply of energy found in every cell that we need in order to do essentially everything (Anonymous‚ 2008). It is an energy source for biochemical reactions such as muscle contraction‚ active transport‚ molecular synthesis‚ and in fireflies‚ also known as lightening bugs‚ bioluminescence (Biology Book). Bioluminescence is the process in which living organisms convert chemical energy into light (Branchini‚ 2008). In the fireflies case the
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