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... THE PHOSPHORUS CYCLE Phosphorus is essential for the formation of cell membranes, DNA, and the calcium phosphate of bones.  The phosphorus cycle has a long-term cycle that involves the rocks of the Earth’s crust and can take millions of years. ...
Background
Background

... plant growth. Animals get the nitrogen they need by consuming plants or other animals that contain organic molecules composed partially of nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into the oceans. As dead plants and animals decompose, nitrogen i ...
BioMI 2900
BioMI 2900

... Title: Nitrogen Fixation and Assimilation Keywords: Modularity, Biosynthesis, Nitrogen Cycle, Nitrification (Nitrogen Fixation), Nitrogenase, NifH, Protection from Oxygen, Heme, Heterocysts, Bacteroids, Gas Chromatograph, Ammonia, Ammonium, Hydrozene, Tetrapyrroles, Amino Acid Biosynthesis, Activate ...
Quiz 2
Quiz 2

... 1. The EPA limit for CO is 9 ppm. Express this number as a percentage. A. 90% B. 9% C. 0.09% D. 0.0009% Percent is parts per hundred. One hundred is 10,000 times less than one million. 2. The burning of coal produces sulfur dioxide, SO2, a pollutant that slowly reacts in air to form SO3. Sulfur trio ...
What are biogeochemical cycles?
What are biogeochemical cycles?

... • Organic forms: amino acids and proteins (from plants or other animals) • Erosion • Fire (combustion) ...
Biogeochemical Cycles
Biogeochemical Cycles

... >CO2 used to make calcium carbonate >sugars broken down & releasing CO2 >dead organisms decomposing or turning into fossil fuels (coal, oil, natural gas) HUMAN INFLUENCE: >burning fossil fuels >clearing/burning forests & rainforests >mining fossils, minerals >planting crops, trees, etc. ...
Cycles in Nature PowerPoint
Cycles in Nature PowerPoint

... After plants have taken up nitrogen from the soil in the form of nitrate ions, the nitrogen is passed along the food chain. When those plants and animals dies, bacteria and fungi take up and use some of the nitrogen from the plant/animal protein and other nitrogen containing molecules. The remaining ...
The Nitrogen Cycle
The Nitrogen Cycle

... Description of the Nitrogen Cycle • N2 gas in the atmosphere must be taken in by symbiotic bacteria in the roots of plants (legumes) through nitrogen fixation. Then other bacteria change the nitrogen so it can be taken up by plants. Animals eat plants and get nitrogen. When plants and animals die, ...
Core Worksheet – Option E - Cambridge Resources for the IB Diploma
Core Worksheet – Option E - Cambridge Resources for the IB Diploma

... Discuss whether carbon dioxide or methane is a more effective greenhouse gas. ...
Document
Document

... farmers adding artificial fertilisers to the soil. farmers using natural fertilisers such as compost and manure. the decay of deal plants and animals. farmers planting peas and beans in their fields every 2 or 3 years. fa ...
Introduction Nitrogen is one of the most abundant elements. About
Introduction Nitrogen is one of the most abundant elements. About

... air we breathe is nitrogen. It is found in the cells of all living things and is a major component of proteins. Organic nitrogen is found in proteins, and is continually recycled by plants and animals. Environmental Impact Nitrogen-containing compounds act as nutrients in streams, rivers, and reserv ...
leguminous plants question red
leguminous plants question red

... Clover is a type of Legume. These are a group of plants that are adapted to take in nitrogen from the air. Other plants are not able to do this despite the high amount of nitrogen available in the air. They are able to do this due to the symbiotic relationship they have with the bacteria found on th ...
the nitrogen cycle: what a gas
the nitrogen cycle: what a gas

... Although nitrogen gas makes up 79% of the Earth’s ___________________, it cannot be used in that form. Nitrogen is needed so cells can make ____________________ and genetic material like ____________________. For this to happen, the nitrogen gas must first be converted into ____________________, whi ...
Document
Document

... No net conversion of C from fats  Glc. Why then, are amino acids “Glucogenic”? ...
Notes: The Nitrogen Cycle
Notes: The Nitrogen Cycle

... - All organisms need to make proteins and nucleic acids, both which contain nitrogen. - Nitrogen gas (N2) = 80% of the atmosphere. A. Nitrifying bacteria that live on the roots of plant and in the soil, “fix” the nitrogen into a form called nitrate B. Plants use the nitrate to make amino acids. - Pl ...
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Nitrogen

Nitrogen is a chemical element with symbol N and atomic number 7. It is the lightest pnictogen and at room temperature, it is a transparent, odorless diatomic gas. Nitrogen is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System. On Earth, the element forms about 78% of Earth's atmosphere and as such is the most abundant uncombined element. The element nitrogen was discovered as a separable component of air, by Scottish physician Daniel Rutherford, in 1772.Many industrially important compounds, such as ammonia, nitric acid, organic nitrates (propellants and explosives), and cyanides, contain nitrogen. The extremely strong triple bond in elemental nitrogen (N≡N) dominates nitrogen chemistry, causing difficulty for both organisms and industry in converting the N2 into useful compounds, but at the same time causing release of large amounts of often useful energy when the compounds burn, explode, or decay back into nitrogen gas. Synthetically-produced ammonia and nitrates are key industrial fertilizers and fertilizer nitrates are key pollutants in causing the eutrophication of water systems.Outside the major uses of nitrogen compounds as fertilizers and energy-stores, nitrogen is a constituent of organic compounds as diverse as Kevlar fabric and cyanoacrylate ""super"" glue. Nitrogen is a constituent of molecules in every major pharmacological drug class, including antibiotics. Many drugs are mimics or prodrugs of natural nitrogen-containing signal molecules: for example, the organic nitrates nitroglycerin and nitroprusside control blood pressure by being metabolized to nitric oxide. Plant alkaloids (often defense chemicals) contain nitrogen by definition, and thus many notable nitrogen-containing drugs, such as caffeine and morphine are either alkaloids or synthetic mimics that act (as many plant alkaloids do) on receptors of animal neurotransmitters (for example, synthetic amphetamines).Nitrogen occurs in all organisms, primarily in amino acids (and thus proteins), in the nucleic acids (DNA and RNA) and in the energy transfer molecule adenosine triphosphate. The human body contains about 3% by mass of nitrogen, the fourth most abundant element in the body after oxygen, carbon, and hydrogen. The nitrogen cycle describes movement of the element from the air, into the biosphere and organic compounds, then back into the atmosphere.
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