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Exercise-Induced Metabolic Acidosis
Exercise-Induced Metabolic Acidosis

... molecule to 2 pyruvate molecules, three reactions release a total of four protons, and one reaction consumes two protons. The conversion of 2 pyruvate to 2 lactate by lactate dehydrogenase (LDH) also consumes two protons. Thus lactate production retards rather than contributes to acidosis. Proton re ...
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Chapter 6 PowerPoint File

... membrane, they release energy. – The ions flow through ATP synthase. – ATP synthase takes the energy from this flow, and ...
Reprint pdf - Sportsci.org
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... molecule to 2 pyruvate molecules, three reactions release a total of four protons, and one reaction consumes two protons. The conversion of 2 pyruvate to 2 lactate by lactate dehydrogenase (LDH) also consumes two protons. Thus lactate production retards rather than contributes to acidosis. Proton re ...
Technological Educational institute of Crete, Greenhouse horticulture  ΠΤΥΧΙΑΚΗ ΕΡΓΑΣΙΑ
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... that atom is been charged by the energy taken from the photon and reaches a higher energy stage. Afterwards, this electron returns to its normal stage. From that moment it tends to release the energy taken from the photon. This happens either in the form of i) heat or in the form of ii) light of lon ...
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... Large Kolle culture flasks filled with CuSO4 or with Y~Cr~O7 solution were used in special experiments as color filters. Calibrated wire screens were used to vary the light intensity. (I~ter, the lens system was replaced by an elliptical mirror of 1 foot in diameter. This focussed the light of a 100 ...
Protons and how they are transported by proton pumps
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... perhaps by providing the scaffold for binding of water molecules. A similar arrangement is seen in the proton release pathway of bacteriorhodopsin [13, 17]. The charged residues on the extracellular side of the pump seem to be divided in two layers: an outer positively charged layer and an inner neg ...
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... on the initial concentration of O2 and whether the CoAGAO was pretreated with excess H2O2. Oxygen isotope fractionation was analyzed as previously described38−47,49 using a specially constructed apparatus.64 Samples were prepared by isolating O2 before and after treatment of O2 saturated solutions c ...
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... its sites appeared nearly identical with those occupied by the osmium derivative. Later cycles of phase refinement included all data to2 A resolution, since 2.0- to 2.5-A shell difference Patterson maps of the gold chloride and uranyl nitrate derivatives showed peaks 2 to 16 times above background a ...
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... Lawrie (2) has reported that the levels of cytochrome oxidase, succinateoxidase,and succinatedehydrogenaseactivity in psoas muscleof the sedentary laboratory rabbit are approximately one-third to one-half as high as those found in the active wild hare, and only one-fourth to one-sixth as high as the ...
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Biochemistry 304 2014 Student Edition Metabolism Overview
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Coenzymes and Cofactors (PDF Available)
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... directly in enzymatic catalysis, they are not usually covalently bound to the enzyme with which they function. Coenzymes may, in fact, be only loosely associated with the enzyme during catalysis, or in other instances may be tightly, but noncovalently, bound to the enzyme. The term cofactor is typic ...
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... • Because the initial trapping of CO2 in C4 metabolism involved PEP carboxylase and the production of oxaloacetate (a four carbon compound), it is called C4 metabolism. • PEP carboxylase utilizes HCO3-, which is structurally distinct from CO2 and O2. • Moving Calvin cycle to bundle sheath cell will ...
A2 Biology Revision Tips
A2 Biology Revision Tips

... 2. The electrons are accepted by a chain of electron carrier proteins in the grana membrane. In a series of redox reactions the electrons are passed from one carrier to another, which releases enough energy to phosphorylate ADP. 3. The “low energy” electrons are passed onto Ps I. Ps I also absorbs l ...
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Light-dependent reactions

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place. The thylakoid membrane contains some integral membrane protein complexes that catalyze the light reactions. There are four major protein complexes in the thylakoid membrane: Photosystem II (PSII), Cytochrome b6f complex, Photosystem I (PSI), and ATP synthase. These four complexes work together to ultimately create the products ATP and NADPH.[.The two photosystems absorb light energy through pigments - primarily the chlorophylls, which are responsible for the green color of leaves. The light-dependent reactions begin in photosystem II. When a chlorophyll a molecule within the reaction center of PSII absorbs a photon, an electron in this molecule attains a higher energy level. Because this state of an electron is very unstable, the electron is transferred from one to another molecule creating a chain of redox reactions, called an electron transport chain (ETC). The electron flow goes from PSII to cytochrome b6f to PSI. In PSI, the electron gets the energy from another photon. The final electron acceptor is NADP. In oxygenic photosynthesis, the first electron donor is water, creating oxygen as a waste product. In anoxygenic photosynthesis various electron donors are used.Cytochrome b6f and ATP synthase work together to create ATP. This process is called photophosphorylation, which occurs in two different ways. In non-cyclic photophosphorylation, cytochrome b6f uses the energy of electrons from PSII to pump protons from the stroma to the lumen. The proton gradient across the thylakoid membrane creates a proton-motive force, used by ATP synthase to form ATP. In cyclic photophosphorylation, cytochrome b6f uses the energy of electrons from not only PSII but also PSI to create more ATP and to stop the production of NADPH. Cyclic phosphorylation is important to create ATP and maintain NADPH in the right proportion for the light-independent reactions.The net-reaction of all light-dependent reactions in oxygenic photosynthesis is:2H2O + 2NADP+ + 3ADP + 3Pi → O2 + 2NADPH + 3ATPThe two photosystems are protein complexes that absorb photons and are able to use this energy to create an electron transport chain. Photosystem I and II are very similar in structure and function. They use special proteins, called light-harvesting complexes, to absorb the photons with very high effectiveness. If a special pigment molecule in a photosynthetic reaction center absorbs a photon, an electron in this pigment attains the excited state and then is transferred to another molecule in the reaction center. This reaction, called photoinduced charge separation, is the start of the electron flow and is unique because it transforms light energy into chemical forms.
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