BIOLOGY DCN PHOTOSYNTHESIS LAB # 6 Effect of varying coloured filters on the photosynthetic rate of spinach chloroplasts The data below is just representative of what trends and relationships you were supposed to see. Numbers can vary. Absorbance at 620 nm for each treatment DCPIP + chloroplasts t=0 min. 0.93 0.945 0.905 0.915 t=3 min. 0.95 0.731 0.83 0.816 change in A620 -0.02 0.214 0.075 0.099 t=0 min. t=3 min. change in A620 t=0 min. t=3 min. change
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Lab Report #1 Photosynthesis Lab Report: The Effects of Varying Concentrations of CO2 on the rate of Photosynthesis in Spinach Leaves Introduction Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. The purpose of this experiment is to see how different concentrations of carbon
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pigments found in spinach plants and determining the spectrum of light each absorbs. By using paper chromatography‚ different pigments of spinach leaves can be separated. The knowledge gained in this experiment is relevant to understanding how the process of photosynthesis works. A Real-world application for this includes the harvesting of clean energy sources‚ as scientific advances have led the way to artificial photosynthesis on the path to replace fossil fuels (Nath‚ 237). Photosynthesis converts light
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In this experiment spinach‚ DPIP‚ phosphate solutions were placed under various filters and the percent orange light transmittance through the solution was measured to determine the rate of photosynthesis. This experiment was set up to discover how different wavelengths of light affect the rate of photosynthesis in a spinach‚ DPIP‚ phosphate solution. I proposed that the spinach‚ DPIP‚ phosphate solution under no filter‚ and therefore exposed to all light will have a highest percent orange light
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Collecting Photosynthetic Rates in Spinach (Spinacia oleracea) Introduction: The purpose of this study was to see which light color would cause the spinach sample to photosynthesize the most within the given time. In order to understand photosynthesis‚ we need to know that chloroplasts absorb light energy from the sun‚ the plant then takes that energy along with water and carbon dioxide and changes it to sugar and oxygen. This happens in order for the plants to grow. But‚ light energy comes in a
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I) Introduction In this lab‚ a test was conducted to determine how the relative redox activity of chloroplasts from spinach leaves‚ which were performing photosynthesis‚ would change when in the presence or absence of light. To observe these changes in redox activity‚ the chloroplasts were exposed to DCPIP‚ a chemical that changes color according to such activity. By determining the redox activity of the chloroplasts‚ it could then be inferred which chloroplasts were photosynthesizing more actively
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Chloroplasts and Photosynthesis All animals and most microorganisms rely on the continual uptake of large amounts of organic compounds from their environment. These compounds are used to provide both the carbon skeletons for biosynthesis and the metabolic energy that drives cellular processes. It is believed that the first organisms on the primitive Earth had access to an abundance of the organic compounds produced by geochemical processes‚ but that most of these original compounds were used up billions
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What is Photosynthesis? Its general reference is sunlight protons converted into resourceful energy‚ of which are autotrophs that work and feed themselves independently. To be more scientific using its equation 6CO2 + 6H2O – Sunlight Energy – C6H12O6 + 6H2O‚ carbon dioxide particles travel through a leaf’s cell surface‚ which is where the chloroplast organelle produces “chlorophyll molecules forming a light harvesting complex absorbing that energy‚ exciting electrons” ((n.d.). Retrieved March 22
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Lab 4: Photosynthesis and Chromatography of Spinach Leaves Discussion: The chromatography of the spinach leaves was taken to establish what pigments were present in the chloroplasts of the leaves. The solvent carried and separated the different pigments up the cellulose paper. The solvent moved up the paper because of capillary action because of adhesion of the solvent molecules and the paper. The pigments dissolved in the solvent also were carried up the paper and were separated because
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Photosynthesis is a process that allows organisms to trap sunlight energy and convert it directly into potential chemical energy. Enzymes are required in order for the biochemical reactions to occur because they act as a catalyst to convert energy from sunlight into chemical potential energy. Two consecutive steps allow the photosynthesis process to take place. These steps are light-independent reactions‚ and light dependent reactions. The occurrences of Light-independent reactions happen in the
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