INTRODUCTION Overall‚ light energy drives a flow of electrons along a system of carriers from H2O to NADP+. The carriers are bound to the membrane between reaction centres. Though their precise arrangement is not known‚ the carriers seem to be organized so that the electron flow cause H+ to move from the stroma to the space within the thylakoids. The resulting difference in H+ concentration across the membrane represents a store of energy that is though to drive he formation of ATP. According to
Free Photosynthesis
transforming light energy into chemical energy that is used to build carbohydrates. Light reactions occur in the thylakoid membrane of the chloroplast‚ sunlight and water are the substrates for this reaction. The conversion of light energy can go through two pathways: noncyclic and cyclic. In noncyclic light transport‚ both Photosystems II and I are involved producing ATP and NADPH. Photosystem II absorbs 680 nm of light energy‚ with the oxidation of water; chlorophyll absorbs light‚ entering an
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Light Lab Introduction: The purpose of this lab is to observe how influential light is to the construction and/or use of CO2 and O2 amongst plants. This can be examined by experimenting the effects of plants under both light and no light. In order to begin this experiment you must begin by wrapping the “BioChamber” with aluminum foil to prevent light from coming through to the leaves‚ however‚ once the lid has been covered you are to poke holes so you can insert the sensors. Next‚ you will
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Glycolysis‚ the Krebs cycle (or citric acid cycle) and the Electron Transport Chain (ETC) are the three phases of cellular respiration used to completely catabolise glucose. a) Glycolysis occurs in the cytosol (or cytoplasm)‚ the Krebs cycle occurs within the Mitochondria (or mitochondrial matrix) and the Electron Transport Chain occurs on the Inner Mitochondrial Membrane (Cristae- fold). b) Anaerobic respiration occurs when low amounts of oxygen (02) are present‚ releasing low amounts of energy
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cells were revealed. More recent developments in biological specimen preparation have come from biochemists and physicists who have used the microscope to examine cells and tissue‚ utilizing a diverse range of techniques available. The fact that electron micrographs appear in most text books and research papers on cell structure and constituents‚ emphasize the importance of microscopy to the biologist faced with the enormous variety of experimental practices existing today for the analysis of cells
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In the process of cellular respiration‚ there are three main parts; Glycolysis‚ Krebs Cycle‚ and Electron Transport Chain. All three of these processes form together to make cellular respiration happen‚ and that gives our bodies energy to do the work that we need to perform every single day. Without cellular respiration‚ our bodies would not have enough energy to perform everyday tasks‚ let alone live and survive. The first process‚ glycolysis‚ starts with a few molecules of glucose. There are
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¬¬¬Biology Exam 4 Energy III – Cellular Respiration (Krebs Cycle and Electron Transport Chain) A. The Krebs Cycle a. Energy i. The net gain of 2 ATP and 2 NADH represents an effective transfer of 20 kcal of energy to ATP (about 10 kcal each) about 80 kcal of energy to NADH (about 40 kcal each)‚ for a total of about 100 kcal ii. Complete oxidation of glucose results in the release of 684 kcal of energy‚ significant energy still remaining in pyruvate b. Eukaryotes i. Pyruvate is transported
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Investigation of the effect of light intensity Equipment: * Data loga * Light sensor * Bulb * Metre ruler X3 Variables: Independent variable – distance of the light sensor from the light source (m) Dependant variable – intensity of light (lux) Control | Why it needs to be controlled? | How will you control it? | Bulb | There are different watts in different bulbs | Use the same bulb‚ but if your one does break half way through the experiment you can use another bulb with the
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ATSB TRANSPORT SAFETY INVESTIGATION REPORT Aviation Occurrence Report 200501977 Final Collision with Terrain 11 km NW Lockhart River Aerodrome 7 May 2005 VH-TFU SA227-DC (Metro 23) ATSB TRANSPORT SAFETY INVESTIGATION REPORT Aviation Occurrence Report 200501977 Final Collision with Terrain 11 km NW Lockhart River Aerodrome 7 May 2005 VH-TFU SA227-DC (Metro 23) Released in accordance with Section 25 of the Transport Safety Investigation Act 2003. Published by: Postal
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into a category called active transport‚ while the ways that don’t require energy are put into a category called passive transport. An example of active transport is the proton pump. The proton pump is an integral part of chemiosmosis‚ and it pumps protons from an area of low concentration to an area of high concentration. This requires energy since things like to move from an area of high concentration to an area of low concentration. An example of passive transport is facilitated diffusion. This
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