Question 1: You have carried out an investigation into the pigments that make up chlorophyll. Use the chromatogram you obtained when carrying out this investigation. Clearly explain the separation technique of paper chromatography in terms of partition. Calculate the Rf value of one of the constituent pigments and compare it to the book value. A paper chromatography was used to separate the pigments that make up chlorophyll to analyse‚ identify‚ and quantify the components‚ using paper (stationary phase
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ause it is less soluble in the solvent and has been slowed down by hydrogen bonding to the cellulose. Chlorophylls contain oxygen and mown and are bound more tightly to the paper than are the other pigments. Chlorophyll a is the primarhy photosynthetic pigment in plants. A molecule of chlorophyll is located at the reaction center of photosystems. Other chlorophyll a molecules‚ chlorophyll and the carotenoids capture light
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CO2 remaining in each container at the end of 2 days. Data table container Color of light CO2 (cm3) 1 Blue 75 2 Red 50 3 Green 200 4 Orange 150 What can you hypothesize from the information above? I. water +chlorophyll + light oxygen + hydrogen II. CO2 +Hydrogen + ATPX+H20 2. The molecule represented by letter X is most likely? a) fatty acid b) DNA c) PGAL d) an amino acid 3. Which process is represented by equation I? a) photolysis b) carbon
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mixtures in organic chemistry is chromatography. Chromatography is the separated of a mixture of two or more different compounds by distribution between two phases‚ one of which is stationary and the other is moving. Another component that is used is chlorophyll‚ which is the green pigment responsible for the color of leaves. Its presence in leaves is necessary for photosynthesis. Photosynthesis can be defined as the process by which plants use light energy to drive the synthesis of organic compounds.
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• 1. The organic molecule produced directly by photosynthesis is sugar: a) lipids; b) sugar; c) amino acids; d) DNA • 2. The photosynthetic process removes carbon dioxide from the environment. a) water; b) sugar; c) oxygen; d) chlorophyll; e) carbon dioxide • 3. The process of splitting water to release hydrogens and electrons occurs during the light dependent process. a) light dependent; b) light independent; c) carbon fixation; d) carbon photophosphorylation; e) glycolysis • 4. The process
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pigments only absorb a narrow range of light‚ many different color pigments are needed to capture more of the sun’s energy. There are three basic classes of pigments which are chlorophylls‚ carotenoids‚ and phycobilins. There are several kinds of chlorophyll and they are greenish pigments. The most important one is chlorophyll A which is very important in making photosynthesis possible. Carotenoids are red‚ orange or yellow pigments and phycobilins are water soluble pigments found in the cytoplasm
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light to energy which is beneficial to the plants‚ while also giving off oxygen as a byproduct for humans. Chloroplasts are in the thylakoid discs of a plant cell‚ that contain chlorophyll a and chlorophyll b‚ which are it’s light-capturing pigments. Colors in the wavelengths are either absorbed or reflected by the chlorophyll in which case green is reflected and colors like red and blue are seemed to be absorbed. If blue and red wavelengths have more absorbance‚ the green doesn’t have a high absorbance
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Effects of Wavelength and Light Intensity on Photosynthetic Activity ABSTRACT The photosynthetic process of eukaryotes revolves around chlorophyll‚ the substance that give plants their green color. Plants convert light energy into chemical energy by means of photosynthesis. This experiment tests the reaction rates of a chloroplast suspension against variables of wavelengths and light intensity. Both a control and an experimental cuvette were exposed to a range of 450 to 750nm of light and varying
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LABORATORY REPORT FOR BIO411 Experiment 5 : Cellular Respiration Experiment 6 : Photosynthesis Title: Cellular Respiration Objective: To observe and determine cellular respiration in yeast/onion cells. * Measure respiration rate using different substrates. * Measure respiration rate at different temperature. Introduction: In this laboratory experiment‚ we are given 3 task. The first one is respiration in yeast. Second is respiratory indicator and the third one is observing
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Green plants absorb light energy using chlorophyll in their leaves. They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration‚ or converted into starch and stored. Oxygen is produced as a by-product. This process is called photosynthesis. Temperature‚ carbon dioxide concentration and light intensity are factors that can limit the rate of photosynthesis. Plants also need mineral ions‚ including nitrate and magnesium‚ for healthy growth. They
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