2.2 Movement in and out Cells 1 Define diffusion Diffusion is the net movement of molecules from a region of higher concentration to a region of lower concentration down a concentration gradient‚ as a result of their random movement 2 Describe the importance of diffusion of gases and solutes and of water as a solvent. Gases Necessary for gas exchange in all living organisms Necessary for obtaining Carbon Dioxide and releasing oxygen during photosynthesis. Solutes (liquids) Dissolved salts
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The overall experiment consisted of three smaller experiments as a result of the different properties chlorophylls possess and the need to test them individually to receive the most accurate results. Preparation for the lab began with selecting a medium to large spinach leaf and deveining it. Once the spinach was prepared‚ it was ground in 5 mL of 100% acetone‚ creating a green acetone extract. The extract was filtered through a funnel with a kimwipe and into a test tube. The volume of the filtered
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photosynthesis. White light form the sun is a mixture of all the colors of the light spectrum: red‚ orange‚ yellow‚ green‚ blue‚ and violet. Light can be either absorbed or reflected by substances called pigments. Most plants are green because the pigment chlorophyll reflects green and yellow light and absorbs the other colors of the spectrum. Problem: • Which colors of the light spectrum are most important for plant growth? Hypothesis: • I believe that if we use the colors red and blue that then the
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the first law of Thermodynamics‚ energy can never be created nor destroyed‚ but can only be transformed. Thus‚ the sun burns up its mass to release light and mass to release light and heat energy that reach the earth. It is this light energy that Chlorophyll plants‚ protists (algae) and monerans (bacteria and cyanobacteria) capture and convert to chemical energy through photosynthesis (photo-light; synthesis-building up) ‚ the key process by which energy that ultimately comes from sunlight is supplied
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superior hybrids. Physiological characters like chlorophyll‚ relative carotenoids and root length density have also been studied to assess the performance of parents and F1 hybrids. Higher economic heterosis was observed for yield in A 1 cytoplasm compared to A4 and A5 cytoplasms. Desirable effects of earliness and maturity can be obtained using A4 cytoplasm while desirable heterosis could be obtained for plant height‚ spike girth‚ number of nodes‚ chlorophyll content‚ relative carotenoids and 1000 grain
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Light energy Background Information (Activity A): In photosynthesis‚ plant cells convert light energy into chemical energy that is stored in sugars and other organic compounds. It is an endergonic and anaerobic reaction. Critical to the process is chlorophyll‚ the primary photosynthetic pigment in chloroplasts. The chemical equation for photosynthesis is: 36 ATP + 6CO2 + 6H2O C6H12O6 + O2 (From: "LabBench for Lab 4." LabBench. PHS School‚ n.d. Web. 22 Dec. 2012. <http://www.phschool
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CHROMATOGRAPHY OF PLANT PIGMENTS Marquez‚ Ma. Rica Paulene‚ Moises‚ Patrisha Kate‚ Policarpio‚ Jairus Paolo‚ Rolda‚ Zylene Joy Department of Biology‚ College of Science‚ University of the Philippines Baguio April 23‚ 2013 ABSTRACT The objective of this experiment was to apply the technique of paper chromatography as a method for separating individual plant pigments contained in plant tissue extracts containing pigment blends. The process of chromatography separates molecules because of the
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chloroplasts. The substances consumed during this reaction are ATP and NADPH. The occurrences of light-dependent reactions happen within the THYLAKOIDS of the chloroplasts. The substances consumed during this reaction is light‚ which is absorbed by chlorophyll molecules‚ which then produces hydrogen ions‚ electrons‚ oxygen gas‚ ATP and NADPH. “The light-dependent reactions drive the light-independent reactions‚ which means the products of the light-dependent reactions‚ ATP and NADPH‚ are required for
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process‚ also known as the light dependent reactions‚ we can assume that more light absorbed would cause a greater rate of photosynthesis as long as all other limiting factors are in excess such as carbon dioxide concentration‚ concentration of chlorophyll and
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fragments of the plants because it contains a green pigment called chlorophyll. Although Photosynthesis can occur in any green portion of a plant‚ it mostly occurs in the leaf. Chloroplasts are primarily located in the cells of mesophyll‚ which are located inside of the leaf. In order to synthesize‚ plants are in need of three essentials: light energy‚ Carbon Dioxide‚ and water. In the process of photosynthesis‚ the chlorophyll collects energy from the sun‚ six molecules of Carbon Dioxide
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