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‚ chlorophyll a occurs in green plants while chlorophyll b
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Formative Assignment Including PSAfor class IX PHYSICS 1. Motion is relative or absolute? Give reason. 2. Name the physical quantity that essentially changes as a body moves. 3. Is displacement or distance independent of path? How? 4. Give example of a motion in which distance is covered but there is no displacement. 5. Give one example of motion where‚ distance and displacement are same. 6. When moving car returns to the same point what will be the ratio of
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for plant growth because they use the energy received from light to synthesize its own food‚ glucose‚ in a process called photosynthesis. Sunlight supplies all different wavelengths‚ which are broken up into red‚ orange‚ yellow‚ green‚ blue‚ indigo and violet. Plants will absorb a color from the sunlight but transmit or reflect another (2). Plants use sunlight in photosynthesis and are therefore exposed to ultraviolet (UV) radiation that is present in sunlight. UV radiation is divided into three classes:
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pioneer species are photosynthetic‚ there are a few limiting factors that affect the rate of photosynthesis: 1. Light Intensity: As light intensity increases‚ the rate of light-dependent reactions that take place during photosynthesis‚ and therefore photosynthesis‚ generally increases proportionately. However‚ as the light intensity is increased‚ another factor will eventually limit the rate of photosynthesis 2. Carbon Dioxide Concentration: An increase in the carbon dioxide concentration increases
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Plant Cells and Solar Cells Photosynthesis is the process of producing and releasing oxygen in the air. It needs sunlight‚ carbon dioxide and water. During the process of photosynthesis‚ the plants decompose the molecules of hydrogen and carbon-dioxide into hydrogen; carbon and oxygen produce glucose which forms the source of their energy‚ growth and food. Few years ago we knew that the only source of energy is photosynthesis which is used by plants to harness solar energy. Nowadays
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creating high hydrogen ion concentration. Photosynthesis: • What is the overall goal of photosynthesis? The overall goal of photosynthesis is to chemically change light into energy. • Because photosynthesis only occurs in plants‚ why is it essential to animal life? It is essential to animal life not only for nutrients from the plants but also because of the byproduct oxygen that is put out from the plants from the photosynthesis process. • What is the role
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(CO2) and water (H2O); the process of photosynthesis is a complex series of chemical reactions resulting in the production of glucose and oxygen (O2). Glucose is a simple sugar‚ which is further processed into fructose and sucrose‚ and any sugars not required immediately to be metabolized for their energy are converted into starches: complex carbohydrates used to store these essential sources of energy for when they are required. The process of photosynthesis is summarized in a series of reactions
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2013.2014 S.T.F.A Lee Shau Kee College Biology SBA Name: Chan Ka Wing 6D(1) Title: Investigation of the effect of light intensity on the rate of photosynthesis Objective: To investigate the effect of light intensity on the rate of photosynthesis Principle: why this method? Variables: Apparatus and materials: 1 pipette 1 pipette filter 1 boiling tube 1 beaker 1 thermometer 1 stand and clamp 1 clip 1 60-watt bench lamp 1 razor blade 1 meter ruler 1 rubber tubing 0.25% sodium hydrogencarbonate solution
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smaller ones with energy being released‚ and anabolic reactions e.g. photosynthesis are where smaller molecules are built up into larger ones which require energy. Catabolism provides the energy for organisms to synthesise larger molecules in its anabolic reactions. To release energy‚ ATP is hydrolysed into ADP and Pi (an inorganic phosphate) which releases energy that can be used for energy requiring reactions such as photosynthesis. However to maintain the organisms anabolic reactions‚ ATP must be
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selective breeding. Anyways‚ most plants require light in order to grow and conduct photosynthesis. Plants that have been previously grown in the dark are incapable of photosynthesis since they lack chlorophyll and many polypeptides needed for light harvesting. But once they have been exposed to light‚ over time‚ reorganization of the plastid membranes occur and all the required enzymes and proteins needed for photosynthesis appear. So undetectable levels of these proteins suddenly appear and become
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