• Biology Notes
    in three major steps, its significance, and its adaptations to produce ATP with changes in kinds and amounts of reactants. d. understanding biotic and abiotic contributions to ecosystems. Notes Chapter 4 – The Energy of Life Section 4.1 – All Cells Capture and Use Energy...
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  • Practice Exam Biochemistry
    saccharolytic bacteria able to to? What are the steps in this? SPLIT SUGARS AND THEN FERMENT THEM STEPS: HYDROLYSE BONDS > SUGARS RELEASED > ENTER BACTERIA What are the three main short chain fatty acids? Which one is important for keeping colonocytes (LI cells) healthy? ACETATE, PROPIONATE...
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  • Dioxygen Activation at Mononuclear Nonheme Iron centers
    iron. Prior to 2007, the mechanisms of extradiol dioxygenases were predicted based of spectroscopic studies that could not directly detect the steps after the substrate was bound. However, in 2007, Kovaleva and Lipscomb report three intermediates of the extradiol-cleaving mechanism by crystalizing...
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  • Photosynthesis
    figured out by the order in which the amino acids are linked together. The link of amino acids then folds around itself to form a secondary structure. When the twisting and folding of the amino acids is complete, it creates the distinctive shape of the active site. The three main steps of the...
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  • Basic Concepts in Biochemistry a Students Survival Guide 2d Ed - Hiram F. Gilbert
    contained in the primary amino acid sequence of cellular proteins is enough to guide a protein into its three-dimensional structure, to determine its specificity for interaction with other molecules, to determine its ability to function as an enzyme, and to set its stability and lifetime. AMINO ACID...
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  • Ch. 04 Study Guide
    . Enzymes are specific and only act on their corresponding substrate. The ability of an enzyme to recognize its substrate depends on the enzymes shape. Each enzyme’s polypeptide chain twists and coils into a unique three dimensional shape that fits the particular shape of its substrate molecule. During...
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  • ethanol
    enzyme is very specific. • What accounts for this molecular recognition? The specificity of an enzyme results from its three-dimensional shape, which is a consequence of its amino acid sequence. • Only a restricted region of the enzyme binds to the substrate. 1 The active site of an enzyme is...
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  • Bio 1
    of sucrose in soln may hydrolyze in 15 days; with sucrose present, same rxn occurs in 1 sec. * Enzymes are highly specific – each one catalyzes only one chemical rxn * Reactants are substrates; they bind to a specific site on the enzyme (active site). * Specificity results from the...
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  • Biol 200 Exam 1 Study Guide
    machines? How proteins coordinate their functions. • Very efficient, high level of coordination. • Each enzyme catalyzes single step. • Channeling of substrates, products, and energy....
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  • Biology 115 Study Guide
     cycle (completes the breakdown of glucose)   Oxidative phosphorylation (accounts for most of the ATP synthesis)   What is the difference in substrate‐level phosphorylation and oxidative  phosphorylation?    ATP formed in glycolysis and the citric acid cycle is produced by  substrate level...
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  • Essays
    QH2 donor to a cytochrome c acceptor at a time, the reaction mechanism of complex III is more elaborate than those of the other respiratory complexes, and occurs in two steps called the Q cycle.[34] In the first step, the enzyme binds three substrates, first, QH2, which is then oxidized, with one...
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  • biology
     conformation (form) causes  a change in behavior (function) 3 Demarest BIOL 1710 External signal → internal response • Signal transduction pathways convert a signal  to a response, in three main steps – 1. Reception:  signal binds receptor – 2. Transduction:  receptor activates...
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  • Biochemistry
    dehydrogenase (LDH), an enzyme that catalyzes a step in anaerobic glucose metabolism and glucose synthesis. The H isoenzyme is highly expressed in heart muscle, has a higher affinity for substrates, is inhibited allosterically by pyruvate, and functions optimally in the aerobic environment of the heart...
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  • Biology
    anaerobic organism or cell. 3. Cells use enzymes as biological catalysts to increase or accelerate the rate of reactions, such as those in photosynthesis or glycolysis. This allows reactions to occur under conditions that sustain life. •Explain how an enzyme catalyzes a reaction. Include in your essay the three main steps of the cycle of enzyme-substrate interactions. •How is enzyme activity regulated by the cell?...
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  • Commrads Play
    lowering the activation energy (energy needed to break/form covalent bonds) Enzymes proteins that decrease the activation energy of a particular chemical reaction What do enzymes do? active site bind substrates (reactants) --> substrate specificity binding involves interactions between enzyme's R...
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  • Campbell Essential Biology Chapters 4 and 5
    change shape slightly, allowing for a better fit and thereby promoting the interaction of enzyme with substrate. Enzyme Inhibitors Enzyme inhibitors are molecules that can disrupt metabolic reactions by binding to enzymes, either at the active site or elsewhere. You can’t shake someone’s hand if...
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  • Notes
    molecules & particulate matter by forming new vesicles from plasma membrane Metabolism – Orderly interactions between molecules Metabolic pathway – begins with specific molecule & is altered in a series of steps resulting in a product (each step catalyzed by specific enzyme Steps control flow which...
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  • Biology
    reversible. A Model of Enzyme Activity In an enzyme-catalyzed reaction, the substrate binds to a very small portion of the enzyme. The location where the substrate binds to the enzyme is called the active site, and is usu- ally a pocket or groove in the three-dimensional structure of the protein (Figure 2...
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  • Ap Bio Review Tri 1
    structure |The overall three-dimensional shape of a polypeptide that is determined by interactions involving the amino | |(of a protein) |acid side chains. Compare with primary, secondary, and quaternary protein structure. | |triacylglycerol |The main storage lipid...
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  • Learning Objectives
    ) of substratesEnzyme names end with the suffix -ase 2 Bioenergetics: Basic Energy Systems • ATP storage limited • Body must constantly synthesize new ATP • Three ATP synthesis pathways – ATP-PCr system (anaerobic metabolism) – Glycolytic system (anaerobic metabolism) – Oxidative system...
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