Tittle: Separation of leaves pigment. Introduction The photosynthetic pigment is used to absorb light during the process of photosynthesis. There are five pigments usually found in spinach leaves: Carotene (yellow)‚ Phaeophytin (yellow-grey)‚ Xanthophyll (yellow-brown)‚ Chlorophyll a (blue-green)‚ Chlorophyll b(green). Photosynthetic pigment is located in the chloroplast of the leaf. The function of chlorophyll a and chlorophyll b is to trap red and blue violet light when they carry out photosynthesis
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White light and refraction: White light from the Sun is made up of all the various colours of visible light. Each of these colours has a different wavelength - red light (at one edge of the rainbow) has a wavelength of ~650 nm‚ whilst violet light (at the other edge) has a wavelength of ~400 nm. When light travels from one medium (say air) to another (water)‚ it changes speed‚ and if the light enters at an angle‚ it will bend. This is known as refraction. Shorter wavelength light (such as violet)
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Discussion of Results and Scientific Explanation: In order to observe how much a chemical substance absorbs light a spectrophotometer can be used. A spectrophotometer measures the amount of light absorbed by measuring the difference in the intensity of the light before and after a beam of light passes through a sample solution. The area in which light is absorbed can provide information about the molecule‚ such as the concentration‚ by identifying the most preferentially absorbed wavelength.1
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Book One: In the first book (The 5th Wave)‚ the aliens (The Silencers) were trying to take over the world to have it for themselves. The alien invasion had 5 waves. 1st wave- Lights Out. Where all power was lost. Wave 2- Surfs Up. Where there was a giant tsunami. Wave 3- Pestilence. Where there was an awful plague that killed off most of the humans on earth. Wave 4- Silencer. Where the “Silencers” toke over and you didn’t know who was a silencer and who was a human. Wave 5- Where the ‘Silencers”
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Refraction Refraction refers to the bending of the transmitted light at the interface between two transparent materials. The angle of refraction depends on the angle of incidence and the relative speeds of the light in the two different media and can be found from the relationship [pic] From this equation we see that the direction in which the light is bent depends on whether it is going from a slower to a faster medium or vice versa. Index of refraction The index of refraction of
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INTRODUCTION Plant pigments consist of four main chemicals. These are Chlorophylls‚ The carotenoids‚ Anthocyanin and Betacaine. The aims of this experiment is to separate the plant pigment into different colours using solvents and column chromatography. The hypothesis of this experiment is that this plant pigment from spinach will contain the chlorophyll pigment or may contain the others too. Chlorophyll: Chlorophyll a is the main component of the plant pigments. This is used for the most
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Name: Chen Yao Le Lab Group: Tues Email: A0111185@nus.edu.sg Matriculation Number: A0111185R Date of Experiment: 17 February 2015 Experiment 6: Synthesis‚ Electronic Spectra‚ Structural Isomerism: Octahedral Co(III) complexes with Chloride and Ethylenediamine Ligands Abstract: In this experiment‚ Δ/Λ-[Co(en)3]Cl3∙4H2O was synthesized and the absorbance in UV-vis spectrum was recorded
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Title: The success of photosynthesis in geranium leaves using visible light wavelengths obstructed by black paper‚ and red‚ blue‚ and green translucent filters. I. Abstract Photosynthesis is a process in which plants use light‚ water‚ and carbon dioxide to produce sugars‚ water and oxygen. Chlorophyll a and chlorophyll b‚ in the chloroplasts of a leaf‚ are responsible for absorbing wavelengths of light for use in photosynthesis with red and blue wavelengths being optimal. Testing
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Colour of Light Effects on Plant Growth Introduction Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. Plants need water‚ Co2 and light energy to create sugar. Photosynthesis occurs mainly in leaves and in 2 phases: light reaction and dark reaction. The light reactions converts light energy to chemical (Biology.clc.uc.edu‚ 2014). This chemical reaction must take place in the thylakoid membrane. Chlorophyll (the green pigment involved
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Absorption spectrum of the Spinach Chloroplast By a Different Wavelength and Photosynthesizes Activity in different light filters Instructor: Dr‚ David Danseraveu Student: Hassan Sedaghat‚ A00345910 Due date: 11/13/2012 Material and Method: In the photosynthesis system‚ plants and other photosynthesizing creatures they use light of the sun as energy by absorbing some specific wavelength. A prepared sample of the chloroplast from spinach was used during this experiment
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