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 light reactions of photosynthesis also produce NADPH. Perspective 10.1 The Evolution of the Light Reactions The biochemical reactions convert
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Chapter 6-Intro to Metabolism METABOLISM= all the chemical reactions in an organism CATABOLIC PATHWAY (CATABOLISM)• release of energy by the breakdown of complex molecules to simpler compounds EX: digestive enzymes break down food ANABOLIC PATHWAY (ANABOLISM) • consumes energy to build complicated molecules from simpler ones EX: linking amino acids to form proteins ORGANISMS TRANSFORM ENERGY ENERGY- capacity to do work KINETIC ENERGY- energy of moving objects POTENTIAL ENERGY- energy
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if light and healthy pigments were necessary for the occurrence of the photosynthesis. Different tubes were used‚ some containing healthy chloroplasts‚ and other containing unhealthy chloroplasts. They were exposed to light or hidden from it‚ by being wrapped with foil. The results showed that the tube which was exposed to light and containing healthy chloroplasts had the higher rate of photosynthesis. INTRODUCTION All living organisms require energy for their metabolic process. The essential source
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MICHAEL OKPARA UNIVERSITY OF AGRICULTURE UMUDIKE (MOUAU) COLLEGE OF CROP AND SOIL SCIENCE (CCSS) DEPARTMENT OF AGRONOMY A TERM PAPER WRITTEN IN PARTIAL FULFILLMENT OF THE COURSE CGB 514 (CYTOGENETICS) TOPIC: PLANT CELL ORGANELLES AND THEIR FUNCTIONS‚ THE DIFFERENCES BETWEEN THE PLANT AND ANIMAL CELL BY ONUMAEGBU BRIGHT C MOUAU/08/11351 LECTURE: DR J N EKA
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place inside the cells. In contrast‚ The site of photosynthesis is chloroplast‚ while the sites of cellular respiration are cytoplasm and mitochondrion. The chloroplast‚ which has two membranes around a central aqueous space‚ is found mainly in mesophyll cells forming the tissues in the interior of the leaf. The chloroplast is made of grana‚ thylakoid‚ and stroma. Chlorophyll‚ which is a green pigment‚ is located in the chloroplasts. The mitochondrion also has two membranes‚ the outer membrane and
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Energy transfers which take place in living organisms The nucleotide ATP (adenosine triphosphate) maintains both catabolic and anabolic reactions. Catabolic reactions e.g. respiration are where larger molecules are broken down into 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.
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Cahpter 10 Biology‚ 7e (Campbell) Chapter 10: Photosynthesis Chapter Questions 1) Organisms that can exist with light as an energy source and an inorganic form of carbon and other raw materials A) are called photoautotrophs. B) do not exist in nature. C) are called heterotrophs. D) are best classified as decomposers. E) both C and D Answer: A Topic: Overview Skill: Knowledge 2) Which type of organism obtains energy by metabolizing molecules produced by other organisms? A) autotrophs
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Israel c Department of Postharvest Science‚ Agricultural Research Organization‚ Volcani Center‚ Bet Dagan 50250‚ Israel The tomato (Lycopersicon esculentum) chloroplast small heat shock protein (sHSP)‚ HSP21‚ is induced by heat treatment in leaves‚ but also under normal growth conditions in developing fruits during the transition of chloroplasts to chromoplasts. We used transgenic tomato plants constitutively expressing HSP21 to study the role of the protein under stress conditions and during fruit
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to take place. These steps are light-independent reactions‚ and light dependent reactions. The occurrences of Light-independent reactions happen in the STROMA of the 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
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decreases. In our second experiment‚ we use three slices of aquatic plant Elodea and add pond water one leaf‚ distilled water for the second and 20% NaCl for the third‚ then observe the cells of each leaf with a compound microscope. Under microscope‚ chloroplasts (green organelles) in Elodea tend to bound to the cell wall in pond water‚ spread all over the cell in distilled water‚ pull away from cell wall in 20% NaCl. In our last experiment‚ we use a dialysis bag that contains 30% glucose and starch solution
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