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RESPIRATION PPT...Campbell Powerpoint presentation
RESPIRATION PPT...Campbell Powerpoint presentation

... The Pathway of Electron Transport • The electron transport chain is in the inner membrane (cristae) of the mitochondrion • Most of the chain’s components are proteins, which exist in multiprotein complexes • The carriers alternate reduced and oxidized states as they accept and donate electrons • El ...
Chapter 15
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... Hexokinase is inhibited by product glucose-6-phosphate:  by competition at the active site  by allosteric interaction at a separate enzyme site. Cells trap glucose by phosphorylating it, preventing exit on glucose carriers. Product inhibition of Hexokinase ensures that cells will not continue to a ...
PRODUCT PROFILE: AVPY (ADVANCED VOLUMIZING
PRODUCT PROFILE: AVPY (ADVANCED VOLUMIZING

... phosphates which it donates to ADP to make more ATP, thus more energy.* This process if further enhanced by Malic Acid, a Krebs Cycle intermidate involved in the production of ATP. ...
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respiration_how cell..

... Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings ...
Energy conversion: Fermentation
Energy conversion: Fermentation

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... 1. Proteins, Carbohydrates and Fats are broken down during digestion and absorption into smaller units: AA’s monosaccharides and fatty acids. 2. These smaller compounds are further broken down into 2-carbon compounds. 3. Compounds are degraded into CO2 and H20. Metabolism: FON 241; L. Zienkewicz ...
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glucose - WordPress.com
glucose - WordPress.com

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... - Thus, both NADH and FADH2 serve as electron donors to reduce O2 to H2O during oxidative phosphorylation—the free energy released is harnessed for ATP synthesis - For example, free energy (∆G°) released by the reduction of O2 by NADH via the following redox reaction is: 0.5O2 + NADH + H+ <=> H2O + ...
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... • cofactor: small inorganic ions... mostly metal ions: Cu (cytochrome oxidase), Mg (kinases), Fe (catalase, peroxidase) • coenzymes: small non-protein but organic compounds Coenzyme A: acyl transfer Flavins: redox reaction NAD+ (NADP+): redox reactions Vitamins: derivatives of B vitamins (B1, B2, B6 ...
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Adenosine triphosphate



Adenosine triphosphate (ATP) is a nucleoside triphosphate used in cells as a coenzyme often called the ""molecular unit of currency"" of intracellular energy transfer.ATP transports chemical energy within cells for metabolism. It is one of the end products of photophosphorylation, cellular respiration, and fermentation and used by enzymes and structural proteins in many cellular processes, including biosynthetic reactions, motility, and cell division. One molecule of ATP contains three phosphate groups, and it is produced by a wide variety of enzymes, including ATP synthase, from adenosine diphosphate (ADP) or adenosine monophosphate (AMP) and various phosphate group donors. Substrate-level phosphorylation, oxidative phosphorylation in cellular respiration, and photophosphorylation in photosynthesis are three major mechanisms of ATP biosynthesis.Metabolic processes that use ATP as an energy source convert it back into its precursors. ATP is therefore continuously recycled in organisms: the human body, which on average contains only 250 grams (8.8 oz) of ATP, turns over its own body weight equivalent in ATP each day.ATP is used as a substrate in signal transduction pathways by kinases that phosphorylate proteins and lipids. It is also used by adenylate cyclase, which uses ATP to produce the second messenger molecule cyclic AMP. The ratio between ATP and AMP is used as a way for a cell to sense how much energy is available and control the metabolic pathways that produce and consume ATP. Apart from its roles in signaling and energy metabolism, ATP is also incorporated into nucleic acids by polymerases in the process of transcription. ATP is the neurotransmitter believed to signal the sense of taste.The structure of this molecule consists of a purine base (adenine) attached by the 9' nitrogen atom to the 1' carbon atom of a pentose sugar (ribose). Three phosphate groups are attached at the 5' carbon atom of the pentose sugar. It is the addition and removal of these phosphate groups that inter-convert ATP, ADP and AMP. When ATP is used in DNA synthesis, the ribose sugar is first converted to deoxyribose by ribonucleotide reductase.ATP was discovered in 1929 by Karl Lohmann, and independently by Cyrus Fiske and Yellapragada Subbarow of Harvard Medical School, but its correct structure was not determined until some years later. It was proposed to be the intermediary molecule between energy-yielding and energy-requiring reactions in cells by Fritz Albert Lipmann in 1941. It was first artificially synthesized by Alexander Todd in 1948.
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