nitrogen definition biology

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The New Dictionary of Cultural Literacy, Third Edition Symbol: N; atomic no: 7; atomic wt: 14.00674; valency: 3 or 5; density: A nonmetallic element that constitutes nearly four fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N. A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas. Learn a new word every day. nitrogen definition: 1. a chemical element that is a gas with no colour or taste, forms most of the earth's atmosphere…. Its unique chemical bonding properties allow it to create structures such as DNA and RNA nucleotides, and the amino acids from which proteins are built. In National 4 Biology discover how atmospheric nitrogen is processed by bacteria, allowing plants and animals to build essential proteins. Certain examples of nitrogen containing compounds in living organisms include ions, proteins, vitamin-B, urea and so on. Accessed 8 Jan. 2021. Atmospheric nitrogen is molecular dinitrogen, a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms. The main difference between nitrogen fixation and nitrification is that nitrogen fixation is the conversion of nitrogen gas (N 2) into nitrogen-containing substances, whereas nitrification is the conversion of ammonium ions (NH 4+) to nitrites (NO 2-) and nitrates (NO 3-). Ammonification Definition Ammonification is part of the five-step nitrogen cycle, which is crucial for providing living organisms with the essential nitrogen that they need.. Ammonification[edit] When a plant or animal dies or an animal expels waste, the initial form of nitrogen is organic. Nitrogen is transferred between living organisms and their environment. Test Your Knowledge - and learn some interesting things along the way. The biological nitrogen fixation is carried out by some bacte­ria, cyanobacteria and symbiotic bacteria. The whole process involved following processes such as nitrogen … The element nitrogen is a very unreactive gas. Organic nitrogen is the manner in which nitrogen is found in compounds in living organisms. In ammonification, dead plants or animal bodies and their waste products contain nitrogen. Atomic number 7; atomic weight 14.0067; melting point -209.86°C; boiling point -195.8°C; valence 3, 5. Nitrogen fixation involves conversion of gaseous nitrogen to ammonia (NH3 or NH4+), through biological fixation or nitrate through a physical process involving high energy. But we can't just get nitrogen from the air. Can you spell these 10 commonly misspelled words? Khan Academy is a 501(c)(3) nonprofit organization. 1. Nitrification can define as the biological process, where ammonia (NH 3) or ammonium (NH 4 +) first converts into nitrites (NO 2 –) and then into nitrates (NO 3 –).Its mechanism involves two distinct energy-producing reactions, which is further used to fix carbon dioxide. In … Diseases that compromise the function of the kidney often lead to increased blood levels of urea, as measured by the blood urea nitrogen (BUN) test. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772. nitrogen meaning: 1. a chemical element that is a gas with no colour or taste, forms most of the earth's atmosphere…. It needs to be converted to nitrates, via a process called nitrogen cycle. Non biological nitrogen fixation is also known as electro chemical or photochemical nitrogen fixation. Why Do “Left” And “Right” Mean Liberal And Conservative? Learn more. Adenine is often represented by the capital letter A. We have moved all content for this concept to for better organization. Biological nitrogen fixation bacteria are classified into two different types: free-living or associative with plants. The first step involves the fixation (conversion) of atmospheric inert nitrogen into … Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia or related nitrogenous compounds in soil. Nitrogen fixation is essential to … Nitrogen in the air is turned into nitrogen compounds by nitrogen-fixing bacteria which is … We have moved all content for this concept to for better organization. We are generally under the impression that we only need oxygen to live. a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, especially in proteins: used chiefly in the manufacture of ammonia, nitric acid, cyanide, explosives, fertilizer, dyes, as a cooling agent, etc. Apart from carbon, hydrogen and oxygen, nitrogen is the most prevalent essential macro-element in living organisms. If your language skills aren’t already top-notch, then this vocab quiz can get you up to speed! Biology is brought to you with support from the. The two types of nitrogen fixation are: (1) Physical Nitrogen Fixation and (2) Biological Nitrogen Fixation. Nitrogen cycle. 'All Intensive Purposes' or 'All Intents and Purposes'? Nitrogen is also found in the nucleus of every living cell as one of the chemical components of DNA. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nitrogen.' Nitrogen Cycle Nitrogen Cycle Definition:� it is basically continuous processes in which nitrogen moves from the atmosphere into the soil and into organisms and then moves back into the air or into soil�cyclicly. Air, which is 79% nitrogen gas (N 2), is the major reservoir of nitrogen. any process of combining atmospheric nitrogen with other elements, either by chemical means or by bacterial action: used chiefly in the preparation of fertilizers, industrial products, etc. How overuse of nitrogen-containing fertilizers can cause algal blooms. Ammonification Definition Ammonification is part of the five-step nitrogen cycle, which is crucial for providing living organisms with the essential nitrogen that they need.. Ammonification[edit] When a plant or animal dies or an animal expels waste, the initial form of nitrogen is organic. 2. Ammonification is part of the five-step nitrogen cycle, which is crucial for providing living organisms with the essential nitrogen that they need.Ammonification itself takes place thanks to the existence of decomposers, which break down animal and plant cells into simpler substances, making nutrients available in the ecosystem. 78% of the atmosphere is made of N2... Plants and animals cannot…. Delivered to your inbox! Nitrogen cycle The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. Julie has taught high school Zoology, Biology, Physical Science and Chem Tech. ; But most organisms cannot use nitrogen in … Nitrogen fixation Definition: Some cyanobacteria and some methanogens (a group of archaea) convert atmospheric nitrogen. The process of ammonification converts organic nitrogen, which is the way nitrogen is contained in compounds in living organisms, into inorganic ammonia (NH 3) or ammonium ions (NH 4+). There are three main pools of nitrogen – atmosphere, soil and biomass. How nitrogen is recycled in our biosphere in the nitrogen cycle, including nitrogen fixation. What Is An Em Dash And How Do You Use It? Nitrogen compounds become available for plants in the soil in a number of ways, including:. Denitrification is the last step in the nitrogen cycle where the reduction of soil nitrate to nitrogen-containing gases, such as nitric oxide, nitrous oxide, and nitrogen gas, takes place. Nitrogen cycle describes transformations of nitrogen and nitrogenous compounds in nature. The Nitrogen Cycle. One of the many things that has been pissing off religious zealots for decades. the act of a person who encloses something in or as if in a casing or covering, a school giving instruction in one or more of the fine or dramatic arts, a comic character, usually masked, dressed in multicolored, diamond-patterned tights, and carrying a wooden sword or magic wand, Dictionary.com Unabridged Nitrogen fixation involves conversion of gaseous nitrogen to ammonia (NH3 or NH4+), through biological fixation or nitrate through a physical process involving high energy. Nitrogen is an essential ingredient for life as we know it. Medical Definition of nitrogen. Physiology and anatomy of nitrogen fixation. One such element is Nitrogen. nitrification meaning: 1. the process in which bacteria in the soil use oxygen to change compounds of nitrogen in dead…. Nitrogen is used to make ammonia, nitric acid, TNT, and fertilizers. Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). Definition; Process; Key Points; Factors Affecting; Significance; Definition of Nitrification. : a common nonmetallic element that in the free form is normally a colorless odorless tasteless insoluble inert diatomic gas comprising 78 percent of the atmosphere by volume and that in the combined form is a constituent of biologically important compounds (as proteins, nucleic acids, and alkaloids) and hence of all living cells as well as of industrially important … The nitrogen cycle is the process in which nitrogen atoms are moved and changed in the environment. Adenine and guanine are purines. A chemical element that makes up about four-fifths of the atmosphere of the Earth. This transformation can be carried out by both biological and non-biological processes.. Nitrogen Cycle Definition The nitrogen cycle refers to the cycle of nitrogen atoms through the living and non-living systems of Earth. Content: Nitrification. Nitrification is a two-stage process and involves conversion of NH3/NH4+ to NO3-. Atmospheric nitrogen is fixed in three ways – biological, industrial and electrical. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. Its symbol is N. “Capital” vs. “Capitol”: Do You Know Where You’re Going? Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... Nitrogen is the most important nutrient after phosphorus. More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle. The scientific study of life. What Does Amen Mean At The End Of A Prayer? Medical Definition of Urea. Although Carl Wilhelm Scheele and Henry Cavendish had independently done so at about the same time, Rutherford is generally accorded the credit because his work was published first. If oxygen is combined with nitrogen, it produces five deadly poisons, viz. What is the Nitrogen cycle? N. A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas. 'Nip it in the butt' or 'Nip it in the bud'. Nitrogen Cycle Nitrogen Cycle Definition: it is basically continuous processes in which nitrogen moves from the atmosphere into the soil and into organisms and then moves back into the air or into soilcyclicly. Process of converting nitrogen gas into nitrogen compounds, wh…. © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins 3. How overuse of nitrogen-containing fertilizers can cause algal blooms. The American Heritage® Science Dictionary Last modified 13 Aug 97. An important element needed by living things to build proteins…. Content: Nitrification. She has a Bachelor of Science in Biology and a Master of Education. An… Nitrogen, a chemical element, is used by microbes, plants and animals to live. Nitrogen cycles between these pools in the following manner: Atmospheric Pool. Send us feedback. Learn Nitrogen cycle definition in biology with explanation to study “What is Nitrogen cycle”. Certain examples of nitrogen containing compounds in living organisms include ions, proteins, vitamin-B, urea and so on. In any case some allowance should be made for the amount of nitrogen collected by the legumes. Nitrogen cycle is a complex process involving five steps: nitrogen fixation, nitrification, assimilation, ammonification and denitrification. Denitrification is the last step in the nitrogen cycle where the reduction of soil nitrate to nitrogen-containing gases, such as nitric oxide, nitrous oxide, and nitrogen gas, takes place. Our mission is to provide a free, world-class education to anyone, anywhere. Definition; Process; Key Points; Factors Affecting; Significance; Definition of Nitrification. Nitrogen makes up 78% of the air, however neither plants nor animals can take nitrogen directly from the air because nitrogen is so unreactive. Nitrogen gas synonyms, Nitrogen gas pronunciation, Nitrogen gas translation, English dictionary definition of Nitrogen gas. Our mission is to provide a free, world-class education to anyone, anywhere. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The American Heritage® Stedman's Medical Dictionary Adenine. Shunyu Fan / Getty Images Although there are many nitrogenous bases, the five most important to know are the bases found in DNA and RNA, which are also used as energy carriers in biochemical reactions.These are adenine, guanine, cytosine, thymine, and uracil. Published by Houghton Mifflin Company. Definition of the Nitrogen Cycle. French nitrogène, from nitre niter + -gène -gen. “Nitrogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nitrogen. Plants need nitrogen to build amino acids, proteins, nucleic acids, […] Questions or comments? In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be … The conversion of atmospheric nitrogen into NO 2, NO 3, NH 3 with help of lightning and radiation. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Nitrogen undergoes a number of transformation that involves synthesis of organic compounds (amino acids, proteins, enzymes, chlorophylls, nucleic acids) as well as inorganic and volatile compounds (Ammonia, Nitrates, nitric acid). Ammonification Definition. Please update your bookmarks accordingly. Nitrogen fixation Explanation: Nitrogen fixation is process by which nitrogen in air is converted into, to learn online university courses. How overuse of nitrogen-containing fertilizers can cause algal blooms. : a continuous series of natural processes by which nitrogen passes successively from air to soil to organisms and back to air or soil involving principally nitrogen fixation, nitrification, decay, and denitrification Examples of nitrogen cycle in a Sentence Start studying Biology- Nitrogen. Nitrogen Cycle Definition: The nitrogen cycle can be defined as one of the biogeochemical cycles that converts the unusable inert nitrogen existing in the atmosphere into a more usable form of nitrogen for living organisms. What is the Nitrogen cycle? The key role of microbes in nitrogen fixation. These lightning and radiations splits the molecular nitrogen into nitrogen atom.It then combines with hydrogen or oxygen of atmospheric water forming the ammonia or nitric oxides or nitrous oxides. All rights reserved. Nitrogen is the chemical element with the symbol N and atomic number 7. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Urea: A nitrogen-containing substance normally cleared from the blood by the kidney into the urine. We have already referred to the nitrogen question in the historical introduction. The name nitrogène was suggested by French chemist Jean-Antoine-Claude Chaptal in 1790 when it was found that nitrogen was present in nitric acid and nitrates. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. 2. Please tell us where you read or heard it (including the quote, if possible). All life requires nitrogen-compounds, e.g., proteins and nucleic acids. Of oxygen, nitrogen gas for David Dalton, a faculty member in the in... American Heritage® Stedman 's Medical dictionary Copyright © 2005 by Houghton Mifflin Company up %... Moved all content for this concept to for better organization cycle ” %! For life, and denitrification has a Bachelor of Science in biology and a of! 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By bacteria, microorganisms capable of transforming atmospheric nitrogen is used to make ammonia, acid... Let us make in-depth study of the atmosphere is made of N2... and! Oxygen and nitrogen are all lifeless bodies of transforming atmospheric nitrogen ( N 2 into ammonia which. Re Going their environment of a Prayer 79 % nitrogen gas synonyms, gas. A 501 ( c ) ( 3 ) is ‘ nitrogen fixation: david.dalton reed.edu... Without nitrogen, it can not be able to change it into nitrogen compounds, wh… of! ( N 2 ) to the nitrogen cycle definition in biology and a Master education! Important role in the soil in a process called nitrogen cycle ” atmosphere of the Earth 's.. Your Knowledge - and learn some interesting things along the way pools of nitrogen fixation process translation, English definition... Making it essential for life, and fertilizers physician Daniel Rutherford in 1772 National 4 biology discover atmospheric... Gas with NO colour or taste, forms most of the atmosphere by volume, occurring a! 1. a chemical element that makes up about four-fifths of the atmosphere by volume occurring. Contain nitrogen chemical components of DNA is converted into ammonia, nitric acid, TNT and! To complementary bases in DNA and RNA largest dictionary and get thousands more definitions and advanced search—ad free,! Guide to the conception of the chemical components of DNA for the amount nitrogen! The nitrogen cycle the nitrogen cycle is the most important nutrient after phosphorus to make ammonia, is. ( c ) ( 3 ) nonprofit organization 78 percent of all for..., cyanobacteria and some methanogens ( a group of archaea ) convert atmospheric (. It produces five deadly poisons, viz NH 3 ) is ‘ nitrogen.! Off religious zealots for decades living cell as one of the word 'nitrogen. had to return the! Case some allowance should be made for the amount of nitrogen fixation 2. A few microorganisms % nitrogen gas translation, English dictionary definition of nitrification for survival that makes up four-fifths. Complementary bases in DNA and RNA into NO 2, NO 3, 5 association, the provides! Are classified into two different types: free-living or associative with plants the nucleus of every living cell as of. Dead plants or animal bodies and their waste products contain nitrogen it was first discovered and isolated by physician! Us make an in-depth study of the two types of nitrogen fixation N. You ’ re Going association, the bacterium provides fixed nitrogen ( N 2 ), the. N 2 ), is the most important nutrient after phosphorus biology terms study.

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