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Topic: Endergonic

	energy metabolism in cells
		Endergonic reactions may be described either by the change in G value [[[Delta]]G] or by the equilibrium constant.
		Endergonic reactions tend to reach equilibrium when the concentration of reactants is still high and the concentration of products is low.
		Endergonic reactions may also be 'pulled' forward by removing the products of the reaction as fast as they form, so that the reaction is prevented from reaching its equilibrium point.
	campus.northpark.edu /biology/cell/energymetab.html (1201 words)

	[No title]
		Endergonic systems of the set M possess such a vast structural variety (polymorphism), that they are capable of establishing eight pairs of simple mutually opposite functional relations between each other, i.e.
		The operations of set R and their combinations entirely cover all kinds of relations that are obligatory for emergence and a stable existence of endergonic systems of the set M. The operations are equally performed with substance and energy and information.
		The complexes of endergonic systems of set M act in the capacity of these structures and carry the combinations of operations of set R. Spontaneous formation of these complexes occur in such a way that the combinations, satisfying the formulated extreme principles, are realized.
	www.calresco.org /kalmykov/vlkfsoel.txt (2333 words)

	The Abstract Theory of Evolution of the Living (Site not responding. Last check: 2007-10-17)
		Endergonic structures of the set M possess such a vast structural variety (polymorphism), that they are capable of establishing ten pairs of simple mutually opposite functional relations between each other, i.e.
		The operations of set R and their combinations entirely cover all kinds of relations that are obligatory for emergence and a stable existence of endergonic structures of the set M. The operations are equally performed with substance and energy and information.
		The complexes of endergonic structures of set M act in the capacity of these structures and carry the combinations of operations of set R. Spontaneous formation of these complexes occur in such a way that the combinations, satisfying the formulated extreme principles, are realized.
	www.stormloader.com /theory/atel.htm (2982 words)

	Chapter 6 (ATP)
		Endergonic reaction = An energy-requiring reaction that proceeds with a net gain of free energy; a reaction that absorbs free energy from its surroundings.
		In cellular metabolism, endergonic reactions are driven by coupling them to reactions with a greater negative free energy (exergonic).
		Exergonic hydrolysis of ATP is coupled with endergonic processes by transferring a phosphate group to another molecule.
	www.niles-hs.k12.il.us /jacnau/Chpt6atp.html (1718 words)

	METABOLISM
		I know I told you that you would not be responsible for the terms exergonic and endergonic but it still helps for you to know them so you can read the rest of these notes.
		Endergonic reactions require energy input to take simple, low energy reactants and build complex, high energy products.
		A key strategy in driving the endergonic reactions is to couple them to exergonic reactions through an energy shuttle called ATP.
	www.olemiss.edu /courses/bisc102/metabol.html (988 words)

	The Generalised Theory of Life
		The operations of set R and their combinations entirely cover all the kinds of relations that are obligatory for emergence and for a stable existence of the endergonic structures of the set M. The operations can equally be performed with substance, energy or information.
		The endergonic structures of order are in principle thermodynamically unstable yet kinetically stable (in other words far from equilibrium, yet maintaining a constant state).
		The new level of organization is basic for the recurrence of the described self-organized logic etc. The last peculiarity - the functional isomorphism of organization of the living on any levels of organization is the property of the fractal organization of life.
	www.calresco.org /kalmykov/vlktgtol.htm (3528 words)

	An Introduction to Metabolism (Site not responding. Last check: 2007-10-17)
		Indeed, one can think of the energy required to drive forward the endergonic dehydration synthesis reaction as energy that becomes trapped in chemical bonds and associated with electrons that are now farther from atomic nuclei than they otherwise might be (in fact, were).
		To those of you who are having troubling dealing with the terms exergonic and endergonic because you learned these concepts in chemistry class using the terms exothermic and endothermic, here's an attempt at a clarification.
		Note that this reaction requires energy (i.e., it is endergonic) which is true in general for dehydration synthesis (i.e., dehydration synthesis is an example of an anabolic reaction)
	www.mansfield.ohio-state.edu /~sabedon/campbl06.htm (2204 words)

	Chapter 5 (Site not responding. Last check: 2007-10-17)
		Often, reactions are coupled, so the energy released from an exergonic reaction is used to drive an endergonic one.
		Energy given off from food catabolism is used to drive endergonic reactions such as synthesis of complex molecules.
		Sometimes, coupled reactions occur in different places, so energy from the exergonic reaction must be transferred to the location of the endergonic reaction.
	www.cofc.edu /~owensm/bio101c5.html (750 words)

	XVI
		Endergonic reactions are those in which free energy increases.
		Reduction is the opposite--acquisition of an electron--and is an endergonic reaction.
		Proteins (enzymes) that hydrolyze ATP to extract the energy and then use it for endergonic reactions are called ATPases, e.g.
	fajerpc.magnet.fsu.edu /Education/2010/Lectures/16_Metabolism.htm (836 words)

	Metabolism
		Endergonic reactions must have an input of energy in order to take place.
		In living systems exergonic reactions and endergonic reactions are often coupled.
		ATP molecule is unstable because all 3 phosphate groups are negative; thus the phosphtes bonds are unstable and the last two are easily broken.
	www.gpc.edu /~vmicheli/biol107/107metab.htm (814 words)

	Cellular Respiration (Site not responding. Last check: 2007-10-17)
		In biochemical pathways, exergonic reactions- those that involve a release of free energy - occur without the net input of energy; endergonic reactions - those that require the addition of energy - do not.
		Chemical energy is used to create ATP, and the splitting of ATP is completed due to endergonic reactions, providing the necessary energy.
		Because the formation of ATP from ADP + inorganic phosphate (Pi) requires an input of free energy, ATP formation is endergonic - it does not occur spontaneously.
	bioweb.cs.earlham.edu /9-12/cellularrespiration (653 words)

	AbcBodybuilding (Site not responding. Last check: 2007-10-17)
		An endergonic reaction is one in which energy is absorbed; this is also called a non-spontaneous reaction.
		Non- spontaneous reactions require energy; that is, endergonic or energy-consuming reactions are coupled to exergonic or energy-releasing reactions.
		Since entropy is constantly increasing, it follows that for the many endergonic reactions which occur to build macromolecules such as contractile tissue, a number of exergonic reactions are also occurring in which the net effect is greater disorder of the universe for greater order of the system itself.
	www.abcbodybuilding.com /energetic.php (4676 words)

	Concepts from Chapter 6: (Site not responding. Last check: 2007-10-17)
		endergonic reaction is the evaporation of water into water vapor.
		Please note that the above two paragraphs said that in biology catabolic reactions are generally exergonic and that in biology anabolic reactions are generally endergonic.
		The excess energy of the exergonic reaction that is not used in the endergonic reaction is released as heat energy which we simply call heat.
	www.ccsn.nevada.edu /science/jreed/190.C6Notes.htm (5112 words)

	Biology 123 (Site not responding. Last check: 2007-10-17)
		Know where the potential energy is stored (products or reactants) for both endergonic and exergonic reactions.
		Explain how ATP transfers energy from exergonic to endergonic processes in the cell.
		Explain why an enzyme cannot change an endergonic reaction into an exergonic one.
	www.unm.edu /~khowe/123sg7.html (245 words)

	Chapter 5
		endergonic reactions - input of energy - products are rich in potential energy
		Cell metabolism is sum total of all endergonic and exergonic reactions in a cell
		Explain how cells use endergonic and exergonic reactions to survive.
	www.ltcconline.net /kloss/bio101/chapter_51.htm (731 words)

	EFFICIENCY OF ATP PRODUCTION
		Almost every time a cell performs an endergonic reaction, such as linking amino acids, synthesizing small molecules, or cellular movement, it derives the needed energy from the splitting of ATP.
		Aerobic organisms produce most of their ATP through respiration, a complex set of reactions that transfer electrons from glucose to oxygen.
		In other words, the energy released when glucose reacts with oxygen is coupled with an endergonic reaction in order to produce ATP.
	www.tiem.utk.edu /~gross/bioed/webmodules/ATPEfficiency.htm (710 words)

	Free Essays - Exergonic
		reactions can be used to push or pull endergonic reactions in order to get them
		An exergonic reaction can drive endergonic (for food breakdowns and movement) -
		endergonic reaction, one that couldnt have happend spontaneously.This was
	www.freeessays.tv /d7113.htm (383 words)

	Enzymes: (Site not responding. Last check: 2007-10-17)
		The work of cells is movement, active transport, and chemical reactions, some of which (endergonic reactions) require the input of energy to go forward.
		However, in any particular situation it may not be possible to harness a particular type of energy to do work.
		It is also important to understand that more energy must be released from the exergonic reaction than is required for the endergonic reaction.
	www.ccsn.nevada.edu /science/jreed/189.Enzymes.htm (2412 words)

	Endergonic reaction -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-17)
		Endergonic reaction -- Facts, Info, and Encyclopedia article
		An endergonic reaction is a chemical reaction in which the change in (Click link for more info and facts about free energy) free energy is positive.
		See also: (Click link for more info and facts about exergonic reaction) exergonic reaction
	www.absoluteastronomy.com /encyclopedia/e/en/endergonic_reaction.htm (48 words)

	chemical reactions & enzymes
		To understand how cells couple energy requiring (endergonic) reactions with the very downhill (exergonic) reaction
		To become familiar with the structure and function of enzymes.
		Living things use ATP as a ready source of free energy, and couple it with endergonic reactions to do work
	employees.csbsju.edu /wlamberts/bio115/topics/2.2energy.htm (255 words)

	Lecture Notes MCB 229. Microbial Metabolism: Energetics
		But these condensation reactions are endergonic -- they will not happen spontaneously.
		Solution to this problem: transfer phospate group from ATP to another molecule, change its free energy so that what was an endergonic ("uphill") reaction becomes an exergonic ("downhill") reaction.
		This is an endergonic reaction, so it won't happen spontaneously.
	www.sp.uconn.edu /~terry/229sp03/lectures/catabolism.html (2872 words)

	rate of exergonic reactions
		Endergonic reactions are those in which the free energy of the initial state is less than the free energy of the final state.
		However, the reaction does not necessarily occur at a great rate.
		In an endergonic reaction the free energy of the initial state is lower than the free energy of the final state.
	academic.brooklyn.cuny.edu /biology/bio4fv/page/exergon.htm (278 words)

	REACTIONS & ENZYMES
		Energy releasing processes, ones that "generate" energy, are termed exergonic reactions.
		Reactions that require energy to initiate the reaction are known as endergonic reactions.
		Time-energy graphs of an exergonic reaction (top) and endergonic reaction (bottom).
	www.estrellamountain.edu /faculty/farabee/biobk/BioBookEnzym.html (1582 words)

	CHAPTER 6 (Site not responding. Last check: 2007-10-17)
		E. ATP powers cellular work by coupling exergonic to endergonic reactions
		What is the difference between an exergonic and an endergonic reaction?
		Explain how energy coupling can be used to drive an endergonic reaction (Figure 6.9).
	www.cofc.edu /~delliss/IntroBioPage/Chapter06.html (477 words)

	Energy/chemical reactions (Site not responding. Last check: 2007-10-17)
		Observe that the final product, C has more chemical energy that the original starting materials.
		Endergonic reactions typically involve the synthesis of complex molecules from simplier ones.
		An example is the cell making proteins from amino acids or plant cells carrying out photosynthesis in which the carbohydrate product has more energy than the starting materials for photosynthesis, carbon dioxide and water.
	staff.jccc.net /pdecell/metabolism/energyhill.html (271 words)

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