In which part of photosynthesis is oxygen produced?
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Photosynthesis uses the energy of light to make the sugar, glucose. A simple general equation for photosynthesis follows.\n\n6 CO2 + 12 H2O + light → C6H12O6 + 6 O2 + 6 H2O\nCarbon Dioxide + Water + Light energy → Glucose + Oxygen + Water\nPhotosynthesis occurs in two stages. In the first phase light-dependent reactions or photosynthetic reactions (also called the Light reactions) capture the energy of light and use it to make high-energy molecules. During the second phase, the light-independent reactions (also called the Calvin-Benson Cycle, and formerly known as the Dark Reactions) use the high-energy molecules to capture carbon dioxide (CO2) and make the precursors of glucose.\n\nIn the light-dependent reactions the pigment chlorophyll absorbs light and loses an electron that travels down an electron transport chain producing the high energy molecules NADPH and ATP. The chlorophyll molecule regains its electron by taking one from water, a process that releases oxygen gas.\n\nIn the Light-independent or dark reactions the enzyme RuBisCO captures CO2 from the atmosphere and in a complex process called the Calvin-Benson cycle releases 3-carbon sugars which are later combined to form glucose.\n\nPhotosynthesis may simply be defined as the conversion of light energy into chemical energy by living organisms. It is affected by its surroundings and the rate of photosynthesis is affected by the concentration of carbon dioxide, light intensity and the temperature.
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Photosynthesis consists of two stages: a series of light-dependent reactions that are temperature-independent and a series of temperature-dependent reactions that are light-independent. The rate of the first series, called the light reaction, can be increased by increasing light intensity (within certain limits) but not by increasing temperature. In the second series, called the dark reaction, the rate can be increased by increasing temperature (within certain limits) but not by increasing light intensity.\n\nThe first step in photosynthesis is the absorption of light by pigments. Chlorophyll is the most important of these because it is essential for the process. It captures light energy in the violet and red portions of the spectrum and transforms it into chemical energy through a series of reactions. Different forms of chlorophyll and other pigments known as carotenoids and phycobilins absorb slightly different wavelengths of light and pass the energy to a form of chlorophyll called chlorophyll A for the completion of the transformation process. These accessory pigments thus broaden the spectrum of light energy that can be fixed through photosynthesis.\n\nPhotosynthesis takes place within cells, in organelles called chloroplasts (in the leaves of plants) that contain the chlorophylls and other chemicals, especially enzymes, necessary for the various reactions. The chemicals involved are organized into units of the chloroplasts called thylakoids, and the pigments are embedded in the thylakoids in subunits called photosystems. Light is absorbed by the pigments, raising their electrons to higher energy levels. The energy is then transferred to a special form of chlorophyll A, called a reaction centre.\n\nTwo photosystems, numbered I and II, are recognized. Light energy is first trapped by photosystem II, and the energized electrons are boosted to an electron receptor. They are replaced in photosystem II by electrons from water molecules, and oxygen is released. The energized electrons are passed along an electron transport chain to photosystem I, and energy-rich adenosine triphosphate, or ATP, is generated in the process. Light energy absorbed by photosystem I is then passed to its reaction centre, and energized electrons are boosted to its electron acceptor. They are passed by means of another transport chain to energize the coenzyme (see Enzyme) nicotinamide adenine dinucleotide phosphate, or NADP, resulting in its reduction to NADPH2. The electrons lost by photosystem I are replaced by those passed along the electron transport chain from photosystem II. The light reaction ends with the energy yield stored in the ATP and NADPH2
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Well, oxygen is used for respiration, and carbon dioxide is only used for photosynthesis. Respiration should occur throughout the day for survival (duh), and photosynthesis can only occur when sunlight is present. So, the ans should be (c)
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chlorophyll is needed in the process of photosynthesis. during the photosynthesis oxigen and glucose are produced. when glucose has to be transported from the leaves to the other parts of plants body it is changed into saccharose (sucrose).\nwhen it reaches for example roots and other parts it is transformed into starch. so it is obvious that in the soil there is no sunlight and in the roots there is no chlorophyll, but the process takes place. chlorophyll and sunlight are not needed.
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The chloroplast -- it's called photosynthesis.
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You should do an experiment, that's what i did.\n \nPhotosynthesis is the production of food compounds from carbon dioxide and water by green plants using energy from sunlight, absorbed by chlorophyll ie. photosynthesis is how plants feed.\n\nlightlightlil\n\n6CO2 + 6H2O                 à C6H12O6 + 6O2\n\n        Raw materials   Products\n\nie.         Green plants make organic substances from inorganic substances.\n\nIn order to keep the equation for photosynthesis simple, glucose is shown as the only food compound produced. However, this does not mean that glucose is not the only food compound produced.\n\nThe process of taking in and giving out gases is known as gaseous exchange. When green plants photosynthesise, they take in CO2 and give out O2. This only happens in daylight when light is available as an energy supply. The exchange of gases in green plants in light is the opposite of that of animals; however this does not mean that green plants do not respire. During daylight, plants photosynthesise and respire at the same time, hence all CO2 produced by the plant during respiration is transformed into O2 and food (and thus energy) for the plant. It is only when the rate of photosynthesis is greater than the rate of respiration that CO2 will be taken in and excess O2 given out.\n\nie.         In darkness O2 is taken in and CO2 is given out - there is no p/s; in dim light the rate of respiration and p/s    is equal - there is no gaseous exchange with the air; in bright light however p/s is faster than respiration          and thus O2 is given out - CO2 is taken in to use for p/s and the CO2 made from the plant’s respiration is   also used to make O2.\n\nie.         The more light (the higher the light intensity), the greater the rate of p/s - unto the LSP [see below].\n\nIf a plant is given plenty of sunlight, carbon dioxide and water, the limit on the rate of p/s is the ability of the plant to absorb these materials and make them react. (eg. total number and capacity of chloroplasts and the physical limitation of carbon dioxide diffusion.) Most of the time plants DO NOT have an unlimited supply and so the rate of p/s is not as high as it might be.\n\nBlackman’s Law states that:\n\n            “The factor in least supply will be the limiting factor.”\n\n\n\nAs the light intensity (LI) increases, the rate of p/s increases, until the plant is photosynthesising as fast as it can - the LSP - Light Saturation Point. When the LSP is reached, plants cannot photosynthesise any faster, even when the light gets brighter. From this point on, according to Blackman’s Law, the factor in least supply will be the limiting factor ie. either CO2, H2O or temperature will be the limiting factor.\n\n\n\nAs the amount of CO2 available increases, the rate of p/s increases, until the plant is photosynthesising as fast as it can - the CSP - CO2 Saturation Point. If both CO2 and light supply are increased together, the rate of p/s will level out. Henceforth it is limited, according to Blackman’s Law, by the factor in least supply, either H2O or temperature. however there is a physical limitation of the carbon dioxide diffusion and the plant’s sunlight absorption.\n\n\n\nAt a lower temperature, the rate of p/s is increasing with increasing LI or CO2 availability, but the LSP or CSP is quickly reached. At a higher temperature, the rate of p/s increased further and reaches the LSP / CSP slower. Thus we can se that temperature affects the rate of p/s - it is higher at higher temperatures.\n\nFrom this information, one can see that if one wants to investigate solely the effect of the quantity of light on Elodea, one must keep both the amount of CO2 and the temperature constant.\n\nLight intensity will decrease as the distance between the light source and the object increases, and vice versa.\n\nThus the relationship between LI and distance can be described as\n\n         1 This value will be very small; multiplying the LI 1000\n\nLI =
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Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy, is associated with the actions of the green pigment chlorophyll. Most of the time, the photosynthetic process uses water and releases the oxygen that we absolutely must have to stay alive. Oh yes, we need the food as well!
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In photosynthesis, plants convert light into chemical energy. This energy is thus used to turn carbon dioxide into carbohydrate releasing oxygen as a byproduct. That is why many plans to fix global warming such as the Kyoto Protocol aim to increase the number of forested areas through so-called carbon sinks.
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glycolysis is the process by which the glucose made in photosynthesis is broken down.\n\nIt takes place in the cells cytoplasm.\n\nUses glucose(sugar) and oxygen\n\nMakes carbon dioxide and water
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Oxygen is the byproduct of photosynthesis, which means that trees create oxygen by processing sunlight, water, and carbon dioxide into the simple carbohydrates they need as "food."
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Simply put:\n\n6CO2 + 6H2O -{photosyhnthesis}-> C6H12O6 (glucose) -{Respiration-> 6CO2 + 6H2O\n\nPhotosynthesis takes energy from sunlight; respiration gives energy to the organism.
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photosyntheses is the way plants make food. the plants make their food by getting sun, water and carbon dioxide and then the plant uses the carbon dioxide (which we breathe out) and lets out oxygen , without any plants we would run out of oxygen.
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The main photosynthetic pigments in plants is the green pigment called chlorophyll found in the chloroplasts.
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Photosynthesis (photo=light, synthesis=putting together), generally, is the synthesis of sugar from light, carbon dioxide and water, with oxygen as a waste product. It is arguably the most important biochemical pathway known; nearly all life depends on it. It is an extremely complex process, comprised of many coordinated biochemical reactions. It occurs in higher plants, algae, some bacteria, and some protists, organisms collectively referred to as photoautotrophs.\n\nPhotosynthesis uses the energy of light to make the sugar, glucose. A simple general equation for photosynthesis follows.\n\n6 CO2 + 12 H2O + light → C6H12O6 + 6 O2 + 6 H2O\ncarbon dioxide + water + light energy → glucose + oxygen + water\nPhotosynthesis occurs in two stages. In the first phase light-dependent reactions or photosynthetic reactions (also called the Light reactions) capture the energy of light and use it to make high-energy molecules. During the second phase, the light-independent reactions (also called the Calvin-Benson Cycle, and formerly known as the Dark Reactions) use the high-energy molecules to capture carbon dioxide (CO2) and make the precursors of glucose.
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Photosynthesis is a process in which green plants prepare their own food from carbondioxide gas and water with the help of the green chlorophyll pigment in the presence of Sunlight. \nIn fact the Solar energy is converted in to chemical energy. This energy is not only useful for them but for all the living organisms on earth. The by product is oxygen which is so vital for us animals.The equation is as follows:-\n6CO2 + 12H2O with light and Chlorophyll = C6H12O6+6H2O +6O2\nCarbon dioxide gas + Water  = Glucose sugar+Water+ oxygen. \nPhotosynthesis is the largest sugar manufacturing industry on the earth. The raw material is CO2 gas and water. the power source is Sunlight.The machinery is Chlorophyll. The end product is sugar and the by product is life giving Oxygen.What is astonishing is there is no pollutant! Can quote any man made industry with such a feature?
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A plant uses photosynthesis to produce glucose.\n\nSome of the glucose will be used in respiration to generate energy.
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b\nbecause photosynthesis is a anabolic process whereby the plant uses simple material to synthesis hexose sugar like glucose