kinds of microscopes include; phase-contrast‚ dark-field‚ polarizing and UV. Each of these microscopes differs in the source and manner in which the light is passed through the specimen to be viewed. The microscopes that are usually used in biology labs are compound binocular or monocular light microscopes. Compound microscopes have a minimum of two magnifying lenses (ocular and objective). Binocular microscopes have two eyepieces while the monocular ones have one eyepiece. The ocular lens of a
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Lab: investigating hooked law with springs Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle Pre lab predictions: We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like Data: Spring #1: y = 8.2941x + 0.0685 This table represents the different distances that
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The International Red Cross and Red Crescent Movement is an international humanitarian movement with approximately 97 million volunteers‚ members and staff worldwide[2] which was founded to protect human life and health‚ to ensure respect for all human beings‚ and to prevent and alleviate human suffering‚ without any discrimination based on nationality‚ race‚ gender identity‚ religious beliefs‚ class or political opinions.[1] The movement consists of several distinct organizations that are legally
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Paper chromatography is a useful technique for separating and identifying pigments and other molecules from cell extracts that contain a complex mixture of molecules. The solvent moves up the paper by capillary action‚ which occurs as a result of the attraction of solvent molecules to the paper and the attraction of solvent molecules to one another. As the solvent moves up the paper‚ it carries along any substances dissolved in it. The pigments are carried along at different rates because they
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...................................................................... 12 4. Basic principles and applications of Potentiometry .................. 16 II. Separation techniques ............................................................ 25 1. Chromatography ................................................................... 25 2. Electrophoresis ..................................................................... 53 III. Immunoassays .............................................................
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/* * 请完善这里的注释 */ package javafxgrouping; /** * * @author 孙平 094632220 */ public class StudentEntity { //从这里开始编写你的代码 private String id; private String name; private String className; public StudentEntity(){ } public StudentEntity(String aID‚ String aName‚ String className) { this.id = aID; this.name = aName; this.className = className; } public String getId() { return id; } public void setId(String id) { this.id = id;
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The goal of this lab was to create and purify DHFR from BL21 ecoli using column chromatography. To know if we isolate DHFR their will be one band at 53 KD or above 50 KD and in our desalted eluate page should have the highestOD₂₈₀ which translates to the highest enzyme activity .Column chromatography is a method used to purify individual chemical compounds from mixtures of compounds. The main advantage of column chromatography is the relatively low-cost and disposability of the stationary phase used
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Title: Candy Chromatography Background Information and Research: Paper Chromatogrpahy is a analytical method that is used for seperating and identifying mixtures of color. There are two stages‚ the stationary phase and the mobile phase. The first is for a solid and the second for a liquid or gas. -Reference http://www.chemguide.co.uk/analysis/chromatography/paper.html Purpose: To see how paper chromatography works. Materials: · Candy with a colored coating‚ like Skittles® or M&Ms® (4 different
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7 all green plants. The dihybrid cross that my group generated showed a 9:3:3:1 ratio of phenotypes‚ which is the ratio Mendel proposed for such a cross. The phenotypes visible for the dihybrid cross were red stem green leaf‚ red stem white leaf‚ no red stem green leaf‚ and no red stem white leaf. Introduction Genetics‚ which is the science of heredity‚ has four major areas. One of these areas is called transmission or Mendelian genetics‚ which deals with the transmission of genes from generation
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crucial role in response to biotic and abiotic disturbances. Leaf shape is seen as one of the most variable and distinct plant traits‚ and variation of leaf morphology can exist among species‚ populations and individuals‚ and within individuals. Because leaves are critical to plant growth and survival‚ it is assumed that the variation in leaf shape represents an adaptive consequence caused by natural selection. Although previous research shows leaf shape variation is possibly related to plant thermoregulation
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