Chlorophyll clip_image002Outline the role of photosynthesis in transforming light energy to chemical energy (including raw materials needed for this process) Photosynthesis occurs in all green plants and is the beginning of nearly all food chains therefore a source of life to all living organisms. It is the process where plants transform light energy from the sun into chemical energy. By using light energy trapped by chlorophyll (light absorbing pigment)‚ plants combine carbon dioxide and
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Chapter 5 Assignment 1. What is energy? What are the three forms of energy? Energy is the capacity to do work. There are four types of energy according to the powerpoint. They are Kinetic energy (energy of motion)‚ potential energy (stored energy)‚ thermal energy (heat)‚ and chemical energy (potential energy of molecules). 2. State the First and Second Laws of Thermodynamics. Include entropy in your explanation. The first law states that energy can neither be created nor destroyed it can
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found in the gut of ruminants and are used for the production of biogas from cow dung. 2. Eubacteria (also known as true bacteria) It includes blue-green algae (cyanobacteria) such as Nostoc‚ Anabaena‚ etc. Photosynthetic bacteria contain chlorophyll a. Chemosynthetic bacteria oxidise various inorganic compounds and use the released energy for their ATP production. They have rigid cell wall and flagellum (if motile) for locomotion. They have specialised cells known as heterocysts that are
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0.21mg riboflavin‚ 0.93mg iron‚ 830mg calcium‚ 57mg phosphorus and 0.20mg zinc per 100g7. The cold extract of curry leaves (10g of cut fresh curry leaves in 200ml of distilled water) has a pH of 6.3 to 6.4. (unpublished personal observations). Chlorophyll has been proposed as an anticariogenic agent and it also helps to reduce halitosis8. We have observed that holding curry leaves in the mouth for 5 to 7 minutes is helpful in reducing halitosis9 and that the terpenes have been found to reduce airborne
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produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water molecules into hydrogen and oxygen. ATP and NADPH are produced in this reaction. In light-independent reactions the ATP and NADPH produced from the previous reactions are
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too small to be individually seen with the unaided eye. However‚ when present in high enough numbers‚ they may appear as a green discoloration of the water due to the presence of chlorophyll within their cells (although the actual color may vary with the species of phytoplankton present due to varying levels of chlorophyll or the presence of accessory pigments such as phycobiliproteins‚ xanthophylls‚ etc.). Contents [hide] * 1 Ecology * 2 Aquaculture * 3 Blooms * 4 See also
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free from smoke. After two weeks the plant didn’t die but look pale and yellowish on its leaves. The cause of the change in color is the disease called chlorosis that affected the production of starch in the plant. The leaf should be green with chlorophyll and pigments on it‚ in order to produce starch. If it became yellow the respiration of the plant is also affected due to carbon monoxide. People who smoke should start avoid smoking in an area filled with lots of plants. Air pollutants producers
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Chapter 3: Cell Structure Notes The cell is the basic unit of biologic organization of the human body Protoplasm: an aqueous colloidal solution of carbohydrates‚ proteins‚ lipids‚ nucleic acids‚ and inorganic salts surrounded by a limiting cell membrane Cells in our respiratory tract produce mucus to trap dust and microorganisms that get past the hairs in our nose then move the material to our throat to be swallowed and passed out through the digestive system The most prominent structure in the
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The effect of light quantity on photosynthesis of green land plants Introduction Photosynthesis is the process of converting light energy into chemical energy (Hoober 1984). Pigments within chloroplasts‚ primarily chlorophyll‚ absorb the incoming solar energy which excites their electrons (Hoober 1984). These pigments exist in photosystems in the thylakoid membrane of the chloroplast (Ladiges et al.2010). As the electrons return to ground level‚ they are captured by the electron acceptor in the
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IGCSE Biology 2012 exam revision notes by Samuel Lees Contents: Section I: Characteristics and classification of living organisms 1. Characteristics of living organisms 2. Classification and diversity of living organisms 2.1 Concept and use of a classificatory system 2.2 Adaptations of organisms to their environment 3. Simple Keys Section II: Organisation and maintenance of the organism 1. Cell structure and organisation 2. Levels of organisation 3. Size of specimens 4. Movement in and out
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