i need help with my bio photosynthesis project?
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http://en.wikipedia.org/wiki/Kreb%27s_cycle
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u want a project if so ican help u
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plants require visible spectrum for photosynthesis. the light you can see is the light they can use. green is least effective. red and blue are most.
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It's the 1st part of photosynthesis, the light reactions. They need the energy from the sun to convert it into chemical energy to serve as the reactants for the 2nd part, the Calvin cycle.\n\nGood luck with your homework!! :)
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Hi!\nI change my field of study from physics to biophysics but still its a great pleasure to solve a problem in physics if you dont mind.\nWish to see your project.\nBye
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How much time do you have?  If you have a few weeks....\n\nGet 5 of the same type of plant.\n\nMake sure they all have the same conditions.  Same type of soil/amount   Same amount of light/temp.  If using lamps, make sure they get the same amount of lamp time.\n\nThe goal is to keep all conditions the same aside from the one variable you will be testing... \n\nSo on to the variable.  Pick 5 different substances that you will give them for fluids... IE...\n\n1. Water  2. Soda   3. Bleach   4. Miracle grow or other plant food mixxed with water.   5. Orance juice.\n\nOkay.  Water will be your control group.  You will use this as a base line to compare all of the others to.  You can of course pick whatever you want for fluids. Those are just some ideas pick whatever fluids you want.  Always make sure to have a control group (the one with water) so you have something as a base line.\n\nGive them all 25 milliliters of the subtance each day. The amount you give them depends on what plant you pick, and its size, adjust accordingly. Make sure to feed them at the same time each day.\n\nBefore you start, write down your hypothesis.. \nHow do you think each plant will do? and why?\n\nTwice a week write down how the plants look.\nHow much they have grown.\nThe plants overall health.\nAlso, write down anything else you have noticed. i.e change in color, a plant dying.  \n\nThen compare it with the plant just getting plain water.  It is doing better than the control?  worse?  same? \n\nAt the end of each week make a theory on how you think the plant will do over the next week.\n\nMake sure to factor out all variable, and keep everything aside from the substance they get the exact same.\n\nWhen done with the experiment write a conclusion.  Was your hypothesis correct? What were you right about? What were you wrong about? How did each plant fair?  What could you have changed to make the experiment more accurate??  Did you do anytyhing wrong? ie mistakenly change something?  If you repeated the experiment, do you think the results would be the same? why or why not?\n\nMake sure to fully explain all of your statements. Charts or graphs of the results are always nice.\n\nThis would work the best if you started them from seed, but you prob don't have that kind of time span.  \n\nIf this is to childish of an experiment, maybe do a plant stem grafting experiment, or a cross-pollination between plants of the same species. i.e make a hybrid plant from 2 differnt types of tomatos or different flowers.
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It is a science project
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I did one.  However, how much time do you have to complete it?\n\nIn one of my projects, my mom bought seeds from the store and we planted them in two plant pots.  One was placed in a corner of the living room where lighting was not to bright and non at night.  The second pot was placed by the kitchen window (choose the window where sun light comes thru to your home the most) and during the night, we lit a plant light so that the pot received constant light.  \n\nBy the end of the month, I compared the two pots and what/how the plants grew.  Guess what happened?  To find out, do the project.
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Photosynthesis uses the energy of light to make the sugar, glucose. A simple general equation for photosynthesis follows...\n\n      6 CO2 + 12 H2O  light → C6H12O6 + 6 O2 + 6 H2O\nCarbon Dioxide+Water+Light energy → Glucose+Oxygen+Water\n\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\nLight to chemical energy---\nThe light energy is converted to chemical energy using the light-dependent reactions. The products of the light dependent reactions are ATP from photophosphorylation and NADPH from photoreduction. Both are then utilized as an energy source for the Light independent reactions.\n\nZ scheme---\nIn plants, light dependent reactions occur in the thylakoid membranes of the chloroplasts and use light energy to synthesize ATP and NADPH. The light dependent reaction has two forms; cyclic and non-cyclic reaction. In the non-cyclic reaction, the photons are captured in the light-harvesting antenna complexes of photosystem II by chlorophyll and other accessory pigments (see diagram at right). When a chlorophyll molecule at the core of the photosystem II reaction center obtains sufficient excitation energy from the adjacent antenna pigments, an electron is transferred to the primary electron-acceptor molecule, Pheophytin, through a process called Photoinduced charge separation. These electrons are shuttled through an electron transport chain, the so called Z-scheme shown in the diagram, that initially functions to generate a chemiosmotic potential across the membrane. An ATP synthase enzyme uses the chemiosmotic potential to make ATP during photophosphorylation while NADPH is a product of the terminal redox reaction in the Z-scheme. The electron enters the Photosystem I molecule. The electron is emitted due to the light absorbed by the photosystem. A second electron carrier accepts the electron, which again is passed down lowering energies of electron acceptors. The energy created by the electron acceptors is used to move hydrogen ions across the thylakoid membrane into the lumen. The electron is used to reduce the co-enzyme NADH, which has functions in the light-independent reaction. The cyclic reaction is similar to that of the non-cyclic, but differs in the form that it only generates ATP and no reduced NADP (NADPH) is created. The cyclic reaction takes place only at photosystem I. Once the electron is displaced from the photosystem, the electron is passed down the electron acceptor molecules and returns back to photosystem I, from where si was emitted; hence the name cyclic reaction.\n\nWater photolysis---\nThe NADPH is the main reducing agent in chloroplasts, providing a source of energetic electrons to other reactions. Its production leaves chlorophyll with a deficit of electrons (oxidized), which must be obtained from some other reducing agent. The excited electrons lost from chlorophyll in photosystem I are replaced from the electron transport chain by plastocyanin. However, since photosystem II includes the first steps of the Z-scheme, an external source of electrons is required to reduce its oxidized chlor
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You can check out this site, it explains a step by step technique:\n\nhttp://www.pall.com/biosepra/34696_7290.asp
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Photosynthesis is the process by which plants convert carbon dioxide and water to glucose for energy. It takes place in the cholorplasts of the cell, which contain chlorophyll. There are two parts to photosynthesis, the light reactions, and the dark reactions, or the Calvin cycle. In the light reactions, light energy triggers electrons to form ATP and NADPH from ADP and NADP through the electron transport chain. This part also takes water and releases oxygen.\n\nIn the calvin cycle, RuBP uses carbon dioxide to create glucose, which is the energy the plant needs to function. \n\nThe products released from photosynthesis are water and oxygen.
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How about visiting this site:\n\nhttp://www.all-science-fair-projects.com/category0.html
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The process by which plants convert water and carbon dioxide into carbohydrates, using sunlight as the source of energy and the aid of chlorophyll.\n\nmethods of measuring rate of photosynthesis:\n\n1) Measure the uptake of CO2\n\n2) Measure the production of O2\n\n3) Measure the production of carbohydrates\n\n4) Measure increase in dry mass \n\nThe only one which won't work is to measure the uptake of water!\n\nUptake of CO2 can be measured with the means of an IRGA (Infra-Red Gas Analyser) which can compare the CO2 concentration in gas passing into a chamber surrounding a leaf/plant and the CO2 leaving the chamber\n\nCO2 uptake can also be measured by following the uptake of carbon dioxide labelled with 14C\n\nOxygen can be measured by a) counting bubbles evolved from pond weed b) with the Audus apparatus\n\nThe rate of decolourisation of DCPIP in the Hill Reaction is a measure of the rate of the light-requiring stages of photosynthesis\n\nThe production of carbohydrates can be measured crudely by monitoring the dry mass of a disc cut out from one side of leaf (with a cork borer) and compared with the dry mass of a similar disc cut from the other side some weeks later.\n\nDry mass is often monitored by the technique of 'serial harvests' where several plants are harvested, dried to constant weight and weighed - this is repeated over the duration of the experiment. \n\nAs the equation for respiration is almost the reverse of the one for photosynthesis, you will need to think whether these methods measure photosynthesis .\n\nI belive this information will be usefull for you.\nAll the best
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If we want to prove that starch is present in photosynthesis steps are as follow:\n1)Take some food material like wheat flour.\n2)Put it in a test tube and add some water in it.\n3)Add some iodine solution a blue black colour shows the presence of starch.
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the rate of photosynthesis can be determined by measuring the rate of either O2 production or CO2 uptake. For right method to determine the rate of O2 produced during photosysnthesis refer the link.\nhttp://web.grinnell.edu/courses/bio/qubitmanual/Labs/PHS/pho.html.
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I typed "9th grade biology experiment" into Yahoo Search and found some experiments.  Here's one of them: http://www.wested.org/werc/earthsystems/biology/fertilizerfrenzy.html\n\nYou may want to tweak the query to find better results.
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i dont think so~\n\nwell give it plenty of either blue or red light, carbon dioxide, water, nutrients and a temperature that is best for the plant.\n\nbasically, these are the factors that contribute to photosynthesis. so by increasing one, the next will be a limiting factor, a balance would be good enough. too much nutrients will cause nutrients to leak from your plant than enter your plants. too much water can cause toe root to rot and well temperature and light. enough is good unless you want to cook your plant as it photosynthesize.\n\ngood luck!