the sugar produced in the photosynthetic cells of plants and other organisms is derived from the initial chemical combining of carbon dioxide and water with sunlight. This chemical reaction is catalyzed by chlorophyll acting in concert with other pigment‚ lipid‚ sugars‚ protein‚ and nucleic acid molecules. Sugars created in photosynthesis can be later converted by the plant to starch for storage‚ or it can be combined with other sugar molecules to form specialized carbohydrates such as cellulose‚
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for subsequent synthesis of carbohydrates in light dependent reactions. The flow of electrons in Photosynthesis [pic] Photosystem: Consists of chlorophyll molecules & accessory pigments e.g. carotenoid accessory pigments trap light energy and pass to the chlorophyll. Results of chromatography: 2. Light independent stage/ carbon fixation/ dark reactions Word Equation: Carbon dioxide + Hydrogen ions ( Carbohydrates + Water ((enzymes) • Site: In
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closed‚ normal‚ closed no CO2 3. Take one leaf from a plant in each try 4. Immerse leaf in boiling water for 1 minute 5. Remove the pigments by immersing each leaf in hot 95% ethyl alcohol 6. When most of the pigment is removed‚ remove the leaf from the hot alcohol; dip each leaf in hot water again for a few seconds 7. Place each leaf in the petri dish and cover it with 3 drops of iodine solution. Allow leaf to sit for a few minutes. 8. Remove the leaf and dip into a beaker of clean water to rinse
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amount of oxygen produced in leaf disks. To do this‚ we first vacuum infiltrate the leaf disks to displace oxygen with water‚ this will make the leaf disks sink. Then‚ when we were ready to let photosynthesis begin‚ we exposed the leaf disks to light and they began to float‚ because the production of oxygen displaced the liquid. There is an inverse relationship between the time it takes the disks to float and the rate of photosynthesis; a slow rate of photosynthesis means leaf disks will float less quick
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Unitary and Modular Organisms: Their Response to Environmental Changes and Perturbation1 Casey Jon Vea Group 3 Section U-2L August 3‚ 2011 ------------------------------------------------- 1A scientific paper submitted in partial fulfillment of the requirements in Biology 150‚ Principles of Ecology laboratory under Mrs. Charina Grace B. Banaay ‚ Ist semester 2011-2012 Abstract Every individuals or organisms dwell in a place where well suited for their growth and development‚ survival and reproduction
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through an ecosystem? v \ v | | e-Text Main Menu | Textbook Table of Contents Ten C H A P T E R 1 0 ` Photosynthesis Chapter Outline CHAPTER OUTLINE Photosynthetic organisms are autotrophs. What is light? Pigments absorb light‚ which drives photosynthesis. Photosynthesis requires both photochemical and biochemical reactions to produce sugars. Chloroplasts are the site of photosynthesis in plants. The light reactions of photosynthesis produce ATP. The
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answer the question. 2. Hydrilla or Water plant 1. Take a leaf from a shoot of water plant which has been exposed to sunlight. 2. Mount the upper surface of the leaf. Focus the LPO up and down‚ you can see two layers of cells. 3. Under the HPO observe the streaming protoplast and note the direction of its movement [cyclosis]. Draw 3 to 4 cells and label the parts. Focus on the tooth-like cell along the margin of the leaf under the HPO. Inside the cell is a jelly-like material called
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Ground -appears to be drying oil A single thin layer of ground which to the unaided eye appears as brown‚ but under the microscope it can be seen to consist of a brownish matrix of ochre. The particles are not only charcoal black‚ but multi-coloured pigment particles of lake‚ vermilion‚ smalt‚ azurite‚ malachite and ultramarine. Preliminary drawing and underdrawing There is a drawing on paper once thought to be a sketch for the picture‚ but it’s now presumed to be a drawing afterward but made before
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paper‚ and red‚ blue‚ and green translucent filters. I. Abstract Photosynthesis is a process in which plants use light‚ water‚ and carbon dioxide to produce sugars‚ water and oxygen. Chlorophyll a and chlorophyll b‚ in the chloroplasts of a leaf‚ are responsible for absorbing wavelengths of light for use in photosynthesis with red and blue wavelengths being optimal. Testing for the most productive wavelength of light was done using four separate geranium leaves that were covered by red
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N.S Exam Study Notes • Matter&Material • Matter-everything around you‚ it is anything made of atoms and molecules. It’s anything that has a mass. Matter is related to light and electromagnetic radiation. Usually found in a few forms and it has 5 states- (Solids‚Liquids‚Gases‚Plasmas‚Bose Einstein Condensates) • Mass- It is the amount of material in an object. It is the same on Earth or Mars. It is the amount of matter which an object contains. • Weight- It is how heavy something is. It is a
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