Which one or more of the following is (are) component(s) of the biogeochemical cycle of phosphorus?\n\na) Cows obtain their phosphorus from plants.\nb) Humans obtain their phosphorus from beef (cow meat).\nc) Erosion of rocks increases the level of phosphorus in soils and lakes.\nd) Phosphorus is used to synthesize a DNA molecule.\ne) All of the above are componenets of the biogeochemical cycle of phosphorus.\n\nPlease include the reasoning behind your answer. Thank you.
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E)  All of them.\n\nA)  Cows don't breathe it in, and it doesn't come from the water so it has to come from the diet.\nB)  Same as A\nC)  While it is true that phosphorous is in our soil, I would argue that the use of detergents and fertilizers are the major problems with phorphorous contaminating our lakes.\nD)  DNA is made of bases (nucleotides) attached by a "sugar phosphate backbone".  If bases are the rungs of a ladder, the sugars and phosphates make up the sides of the ladder.
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Agricultural Applications - radioactive tracers\n\n\nRadioisotopes can be used to help understand chemical and biological processes in plants. This is true for two reasons: 1)radioisotopes are chemically identical with other isotopes of the same element and will be substituted in chemical reactions and 2)radioactive forms of the element can be easily detected with a Geiger counter or other such device.\nExample:\nA solution of phosphate, containing radioactive phosphorus-32, is injected into the root system of a plant. Since phosphorus-32 behaves indentically to that of phosphorus-31, the more common and non-radioactive form of the element, it is used by the plant in the same way. A Geiger counter is then used to detect the movement of the radioactive phosphorus-32 throughout the plant. This information helps scientists understand the detailed mechanism of how plants utilized phosphorus to grow and reproduce.
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I'd have to go with 'C.' Many unicellular organisms can get their ATP through anaerobic pathways like fermentation. Some multicellular organisms, such as humans, can generate ATP anaerobically if we had to - like sports involving short powerful bursts of activity. But eventually we'd need areobic pathways for more ATP.
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1.The estimation of the photosynthetic rate and diffusive conductance of a leaf depends on the accurate measurement of a number of physical properties of the leaf, the air around it, and the light falling on it.\n\n2. Electron transport chains in mitochondria\nThe cells of all eukaryotes (all animals, plants, fungi, algae – in other words, all living things except bacteria and archaea) contain intracellular organelles called mitochondria that produce ATP. Energy sources such as glucose are initially metabolized in the cytoplasm. The products are imported into mitochondria. Mitochondria continue the process of catabolism using metabolic pathways including the Krebs cycle, fatty acid oxidation and amino acid oxidation.\n\nThe end result of these pathways is the production of two energy-rich electron donors, NADH and FADH2. Electrons from these donors are passed through an electron transport chain to oxygen, which is reduced to water. This is a multi-step redox process that occurs on the mitochondrial inner membrane. The enzymes that catalyze these reactions have the remarkable ability to simultaneously create a proton gradient across the membrane, producing a thermodynamically unlikely high-energy state with the potential to do work. Although electron transport occurs with great efficiency, a small percentage of electrons are prematurely leaked to oxygen, resulting in the formation of the toxic free radical, superoxide.\n\nThe similarity between intracellular mitochondria and free-living bacteria is striking. The known structural, functional and DNA similarities between mitochondria and bacteria provide strong evidence that mitochondria evolved from intracellular prokaryotic symbionts that took up residence in primitive eukaryotic cells.
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Phosphates tend to cause overgrowth of algae. I think you could use Tide in your experiment (unless they've changed the formula). I was once told that you could use a mixture of Tide to make stuff glow in the dark, because it was so high in phosphates...but this would be something you could try for yourself.\n\nThe point was that phosphates in water coming out of water treatment plants could affect the ecosystem by causing overgrowth of vegetation.\n\nGood experiment.
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Photosynthesis , basically occurs in two distinct phases. 1) Light reaction & 2) Dark reaction\n            Both are part of photosynthesis\n6CO2 + 12H2 O -> LIGHT &   CHLOROPLAST> = C6 H12 O6 + 6H2 O + 6O2\nThe above is the often quoted equation of the process\n            1) Light reaction or the Hill’s reaction occurs in the grana of a chloroplast.\n  Sun’s light energy is used to convert ADP in to ATP …………. (i)\n   NADP is converted in to NADP. H2…………………………… (ii)\n It can occur only in the presence of light, hence the name.\n2) Dark reaction or Calvin’s cycle occurs in the stroma of a chloroplast.\n   Light plays no role in it. Hence  called dark reaction.\n  With the help of the two products of light reaction, i.e. ATP & NADP.H2 glucose is manufactured from CO2 and H2 O  i. e. carbon dioxide gas and water.\nThe CO2   in the above equation comes from the atmosphere and enters through the stomata on the leaves.\nThe H2 O  in above equation comes from the soil through the roots, stem and xylem elements.\n A single molecule of Glucose (C6 H12 O6) requires all the six molecules of carbon dioxide gas but only 50% of water ( Only 6 out of 12 H2 O molecules entering the reaction (see the equation)\nRemaining 50% water ( The water you are talking about, I presume) and the O2 gas is released back in the atmosphere as a byproduct ( and not waste product) . There is no room for waste in the nature.\nIt is wholly man made and he is paying for that and will continue to pay dearly  for his tampering with the Nature!\n\n\nEdit---> The 50% water that is released in the atmosphere through the stomata comes from the soil...................(1)\n\n              This is recombined water, after spltting of the orginal water molecules in to hydrogen and oxygen to extract electrons \nfor the manufacture of ATP and NADP.H2...................(2)\n\nIn short, all the molecules out of the 12 original are utilised \none way or the other..................(3)
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i think it does, where does the carbon in the trees come from otherwise? it comes from the carbon dioxide they use in photosynthesis\n\n--\nWell not indefinitely. If you burn the trees the carbon is released again, or if they decompose the carbon is released as carbon dioxide. I think its called the carbon cycle.
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The answer is C.  Six molecule of 3-phosphoglycerate is produced per turn of the Calvin cycle (in the first step).  One full turn of the Calvin cycle requires the fixation of three CO2 molecules.  Also ATP and NADPH is used in the Calvin cycle and both are oxidized to lower energy forms.  Only 1 RuBP is produced per cycle.
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The sun is the source of energy. Plants are next. Then herbivores or plant eaters. Then comes the carnivores that catch and eat the herbivores. Finally are the decomposers
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The nitrogen cycle is the biogeochemical cycle that describes the transformations of nitrogen and nitrogen-containing compounds in nature.\n\nNitrogen (Latin nitrogenium, where nitrum (from Greek nitron) means "native soda" (see niter), and genes means "forming") is formally considered to have been discovered by Daniel Rutherford in 1772, who called it noxious air or fixed air. That there was a fraction of air that did not support combustion was well known to the late 18th century chemist. Nitrogen was also studied at about the same time by Carl Wilhelm Scheele, Henry Cavendish, and Joseph Priestley, who referred to it as burnt air or phlogisticated air.\n\nEarth's atmosphere is about 79% nitrogen, making it the largest pool of nitrogen. Nitrogen is essential for many biological processes; it is in all amino acids, is incorporated into proteins, and is present in the bases that make up nucleic acids, such as DNA and RNA. In plants, much of the nitrogen is used in chlorophyll molecules which are essential for photosynthesis and further growth.
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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 agriculture phosphate refers to one of the three primary plant nutrients, and it is a component of fertilizers. Rock phosphate is quarried from phosphate beds in sedimentary rocks. In former times it was simply crushed and used as is, but the crude form is now used only in organic farming. Normally it is chemically treated to make superphosphate, triple superphosphate, or ammonium phosphates, which have higher concentration of phosphate and are also more soluble, therefore more quickly usable by plants.
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well theres alot of material i can provide you with but i dont know what particular experiment you are designing as there are always different experiments within an experiment.\nanyhow, i think this is an example of an experiment for photosynthesis and respiration and their pH levels.\n\nhttp://www.science.siu.edu/plant-biology/plb337/old_st_papers/emmert.pdf \n\n\nif you are doing the same experiment, i guess you will find this one really helpful.\n\n.. Good Luck
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If I'm not wrong, the two are directly proportional - the more the nutrients in the soil, the more they would favour plant growth by the synthesis of proteins and hence better and greater yield. \nBut I think this would go on till a certain point ( it might be the saturation point or something). I mean, if your bestow the soil wholly with more minerals and nutrients than the plants need, it won't give you more yield, because then the yield rate will be limited by other factors such as light and carbon dioxide. If you then increase the latter two factors, then the yield will increase again.\n\n[Again, I'm not sure about this....someone please correct me if I'm wrong!!]\n\nEDIT: Ah, there you go.....Fred gave a more thorough explanation.
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these links might help:\n\nhttp://zahry.usm.my/CAI_CBL/15-42426/_main/assign3/312fou.htm\n\n\nhttp://environment.uwe.ac.uk/video/cd_hdef/topic%20foundations/section2.htm
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B.  Donating electrons to photosystem II.\n\nSee discussion of water photolysis in the first source given below.\n\nAnswer A is wrong because NADPH is already reduced, and doesn't "want" any more electrons.  NADP+ is the oxidized form, which reacts with the electrons and hydrogen ions produced by the photolysis of water to form NADPH.\n\nAnswers C and D are wrong because water is an electron donor (not an electron acceptor)  in photosynthesis.  Water is photolysed, producing molecular oxygen, hydrogen ions, and electrons:\n\nH2O -> 2H+ + 2e- + 0.5O2
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I don't think a lot of people read this. It is interesting information. I had to take a tree hugger science last year and one of the things the professor admitted to is that another one of the destructive gases to the ozone that they beleive is causing the global warming is ethanol, and uria, which are both caused by natural body occurances, the ethonal comes from Pooh, while the uria comes from Urine. Not just human but animal as well. I personally don't know, but am refreshed to see another prospective on the whole thing. Now they can prove all of it, inclucding the CFC part Maybe we can all use Aqua Net again.