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Chapter 30 HEIN
Chapter 30 HEIN

... Figure 30.7 Enzyme-substrate interaction illustrating both the lock-and-key hypothesis and the induced-fit model. The correct substrate (orange square-blue circle) fits the active site (lock-andkey hypothesis). This substrate also causes an enzyme conformation change that positions a catalytic grou ...
Metabolism of Carbohydrates
Metabolism of Carbohydrates

... Substrate transfers a phosphate group directly  Requires enzymes Phosphocreatine + ADP Creatine + ATP ...
Biochemistry Quiz 3
Biochemistry Quiz 3

... • Another name for a fat. ...
Chapter 6 How Cells Harvest Chemical Energy  In eukaryotes, cellular respiration
Chapter 6 How Cells Harvest Chemical Energy  In eukaryotes, cellular respiration

... respiration and removes CO2  Respiration, as it relates to breathing, and cellular respiration are not the same. – Respiration, in the breathing sense, refers to an exchange of gases. Usually an organism brings in oxygen from the environment and releases waste CO2. – Cellular respiration is the aer ...
Darwin`s warm little pond revisited: from molecules to the origin of life
Darwin`s warm little pond revisited: from molecules to the origin of life

Chapter 8 Metabolism
Chapter 8 Metabolism

... – MOTION energy in the movement of objects. The faster they move, the more energy. Wind is motion energy. When a car comes to a total stop, releases all motion energy in uncontrolled instant. – SOUND -movement of energy through substances in longitudinal waves. Sound produced when force causes objec ...
THE CELLULAR RESPIRATION SAGA II: THE CITRIC ACID CYCLE
THE CELLULAR RESPIRATION SAGA II: THE CITRIC ACID CYCLE

... Operation: “Capture Electrons” • Step 3: Make an ATP by substrate‐level phosphorylation • CO2 is released • More NADH is made • Left with 4 C molecule ...
AP Biology Summer Homework Macromolecules WebQuest
AP Biology Summer Homework Macromolecules WebQuest

... 2. How many glucose monomers are there in a single starch molecule? __________________________ 3. Glucose molecules can be added to starch by a __________________________ reaction, where two molecules__________________________ bond together and release a __________________________ molecule. 4. Which ...
Amino Acids - Official Methods of Analysis of AOAC INTERNATIONAL
Amino Acids - Official Methods of Analysis of AOAC INTERNATIONAL

... acids and taurine (as shown in Table 1) in all forms of infant, adult, and/or pediatric formulas (powders, ready-to-feed liquids, and liquid concentrates). For amino acids sensitive to modification during handling and/or processing (primarily methionine, lysine, and cysteine/cystine), which can resul ...
states of water - gozips.uakron.edu
states of water - gozips.uakron.edu

... GEL - 2 phase system - solid with liquid dispersed Molecules too large to form solution - cooked starch, cellulose, pectins Unstable - must be stabilized in food products Important to food science ...
Relationship between Photosynthesis and Cellular Respiration
Relationship between Photosynthesis and Cellular Respiration

... H+ ions must move back from a higher lower concentration Only return to inner compartment through ATP synthases, “gates of the dam” As they move through, activate ATP synthase to make ATP from ADP + Pi This process is called Chemiosmosis (ATP production linked to H+ gradient) ...
Chapter 14 Lipid and Amino Acid Metabolism
Chapter 14 Lipid and Amino Acid Metabolism

... – Linoleic and linolenic acids from the diet can be converted to other polyunsaturated fatty acids. • The human body can convert glucose to fatty acids, but cannot convert fatty acids to glucose. – Humans have no enzyme that catalyzes the conversion of acetyl CoA to pyruvate, which is required for g ...
Lect4 Proteins
Lect4 Proteins

... repulsive, depends on distance Electrostatic interactions or ionic bonds: weak bonds that form between charged groups in aqueous environments Hydrophobic effects: arise because hydrogen bonded structure of water forces hydrophobic groups into the internal parts of the protein. ...
Nova Southeastern University
Nova Southeastern University

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No Slide Title
No Slide Title

... Enzyme acts on forward and reverse reactions Activity depends on protein’s native structure Regulated - by concentrations of substrate and substances other than substrate ...
Biology 5.3 Cellular Respiration - Chemistry
Biology 5.3 Cellular Respiration - Chemistry

... Glucose + oxygen carbon dioxide (waste) + water (waste) + energy ...
some molecular basics
some molecular basics

... downregulated) as the binding partner for ENaC. Nedd4 [19] contains a C2 domain, 3 (or 4 in the human) WW domains, and a ubiquitin-ligase HECT (homology to the E6-AP C terminus) domain (Fig. 1). ENaC–Nedd4 interaction is mediated by the WW domains of Nedd4 which bind to the PY motifs of a, b and g E ...
IV. -Amino Acids: carboxyl and amino groups bonded to
IV. -Amino Acids: carboxyl and amino groups bonded to

Imitation of Life - American Scientist
Imitation of Life - American Scientist

... Brian Hayes is senior writer for American Scientist. Additional material related to the Computing Science column appears at http://bit-player. org. Address: 11 Chandler St. #2, Somerville, MA 02144. E-mail: [email protected] ...
Final a
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... cannot be processed via beta-oxidation. Outline the intermediates involved in converting ...
Chapter 9 - Cellular Respiration
Chapter 9 - Cellular Respiration

... Chemical Energy • Form of potential energy. • Chemical energy stored in Carbohydrates is transferred to ATP molecules. • Energy also released by heat. ...
Alpha/Beta structures
Alpha/Beta structures

... End of story? No other a/b proteins? • There is a good deal of other a/b proteins • However, most of them have folds with ...
Quantitative amino acids analysis for the diagnosis and follow up of
Quantitative amino acids analysis for the diagnosis and follow up of

... among methods used to quantify physiological amino acids in body fluids o Evaluate the use of quantitative amino acid analysis for IEM diagnosis and follow-up ...
One Gene - One Polypeptide
One Gene - One Polypeptide

... each code for a single polypeptide. Polypeptides are chains of amino acids that are eventually folded or joined together in the cell to form proteins. Recall that most proteins usually consist of between 2 and 4 polypeptide chains bonded together. These proteins form the molecular basis of our pheno ...
Extrapolating Anfinsen`s conclusions…
Extrapolating Anfinsen`s conclusions…

... have recently been characterised. This observation ie that not all the "doing" molecules in cells are proteins once again raised the issue of the basis of early life. Could RNA-only organisms have preceded the evolution of proteins and DNA? We shall not consider ribozymes further. Enzymes usually ha ...
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Metabolism



Metabolism (from Greek: μεταβολή metabolē, ""change"") is the set of life-sustaining chemical transformations within the cells of living organisms. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. The word metabolism can also refer to all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells, in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism.Metabolism is usually divided into two categories: catabolism, the breaking down of organic matter by way of cellular respiration, and anabolism, the building up of components of cells such as proteins and nucleic acids. Usually, breaking down releases energy and building up consumes energy.The chemical reactions of metabolism are organized into metabolic pathways, in which one chemical is transformed through a series of steps into another chemical, by a sequence of enzymes. Enzymes are crucial to metabolism because they allow organisms to drive desirable reactions that require energy that will not occur by themselves, by coupling them to spontaneous reactions that release energy. Enzymes act as catalysts that allow the reactions to proceed more rapidly. Enzymes also allow the regulation of metabolic pathways in response to changes in the cell's environment or to signals from other cells.The metabolic system of a particular organism determines which substances it will find nutritious and which poisonous. For example, some prokaryotes use hydrogen sulfide as a nutrient, yet this gas is poisonous to animals. The speed of metabolism, the metabolic rate, influences how much food an organism will require, and also affects how it is able to obtain that food.A striking feature of metabolism is the similarity of the basic metabolic pathways and components between even vastly different species. For example, the set of carboxylic acids that are best known as the intermediates in the citric acid cycle are present in all known organisms, being found in species as diverse as the unicellular bacterium Escherichia coli and huge multicellular organisms like elephants. These striking similarities in metabolic pathways are likely due to their early appearance in evolutionary history, and their retention because of their efficacy.
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