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Bioenergetics
Bioenergetics

... • Recall: If oxygen is present in sufficient quantities, the end product of glycolysis, Pyruvate, is not converted to lactate but is transported to the mitochondria, where it is taken up and enters the Krebs cycle ...
Practice Cellular Respiration Test
Practice Cellular Respiration Test

... a) Obligate aerobes must live in oxygen presence b) Facultative anaerobes can live in the presence or absence of oxygen c) Obligate anaerobes must live in the absence of oxygen d) Chemoautotrophs were the last type of organism to establish themselves on Earth e) Heterotrophs rely on autotrophs for e ...
Respiration - Fort Thomas Independent Schools
Respiration - Fort Thomas Independent Schools

... • Cytochrome c: is one of the proteins of the electron transport chain… often used by geneticists to determine relatedness… exists in all living organisms. ...
1.1-IMS-CHEM.Macromolecules
1.1-IMS-CHEM.Macromolecules

... • Large organic molecules. • Also called POLYMERS. • Made up of smaller “building blocks” called MONOMERS. • 4 Macromolecules: 1. Carbohydrates 2. Lipids 3. Proteins 4. Nucleiccopyright acids (DNA and RNA) cmassengale ...
CH_18_8_Degradation_Amino_Acids
CH_18_8_Degradation_Amino_Acids

... Match each the intermediate with the amino acid that provides its carbon skeleton: pyruvate, fumarate, or ketoglutarate. A. B. C. D. ...
OVERVIEW OF LIPID METABOLISM
OVERVIEW OF LIPID METABOLISM

... tissues except those lacking mitochondria (eg. red blood cells). Brain adapts slowly to the use of ketone bodies during prolonged starvation. D. Control of VLDL Levels in Health and Disease 1) The liver normally synthesizes fat and exports it as VLDL particles only in the fed state. ...
Pathways - PharmaStreet
Pathways - PharmaStreet

... • Secondary metabolites can be synthesized by combining several building blocks of the same type, or by using a mixture of different building blocks. • Many of secondary metabolites also contain one or more sugar units in their structure. • To appreciate how a natural product is elaborated, it is o ...
Print › Biochemistry | Quizlet
Print › Biochemistry | Quizlet

... pH: measure of the concentration of hydrogen ions (H+) in a solution polar molecule: molecule with oppositely charged regions polymer: large molecule formed from smaller repeating units of identical, or nearly identical, compounds linked by covalent bonds product: substance formed by a chemical reac ...
Chapter 7
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... and production of pyruvate. Referred to as the Embden-meyerhof pathway ( in the cytosol). (2)oxidation of pyruvate: pyruvate produced by glycolysis is transported into the mitosol and is oxidized to CO2 and H2O with production of energy ...
03-232 Biochemistry
03-232 Biochemistry

... key intermediates and their products. Feel free to draw a well-labeled diagram. Choice B: When cellular levels of O2 are limiting during strenuous exercise, glycolysis becomes the main source of energy. Describe what additional step(s) in either yeast or mammalian cells is (are) needed to allow cont ...
TOUR OF THE CELL
TOUR OF THE CELL

9.3 Fermentation
9.3 Fermentation

... • There is a pathway that can make ATP without oxygen • Fermentation: the process of glycolysis and the anaerobic pathway combined • Without oxygen, fermentation releases energy from food molecules by producing ATP ...
The Body`s Essential Building Blocks, Article by Gloria Gilbère, N.D.
The Body`s Essential Building Blocks, Article by Gloria Gilbère, N.D.

... Animal protein, such as that found in natural goat-milk protein, is the only source of vitamins A and D as well as being a complete protein containing all essential amino acids. ...
Fall Semester Review - mychandlerschools.org
Fall Semester Review - mychandlerschools.org

... of sugars compared to the bottom row? The top sugars have their carbonyl group at the end of the carbon skeleton & the bottom ones have their carbonyl group in the middle ...
Chapter 9 - Bulldogbiology.com
Chapter 9 - Bulldogbiology.com

... Plants respire only when they don’t photosynthesize. Cellular respiration takes place only in plant roots, not throughout the plant. Fermentation is misunderstood by many students. Many students do not recognize that it functions to regenerate NAD+ and think that it yields additional ATP. You may be ...
H - Bioinf!
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... Protein stability and denaturation The native structure of proteins can be broken up, by heating or by high concentrations of certain chemicals such as urea (DENATURATION) Denaturation destroys the secondary, tertiary and quaternary structures but leaves the polypeptide chain intact. The stability ...
Glucose Metabolism
Glucose Metabolism

... 4. ATP is made in steps 7 and 10. The ΔG for this reaction is +7.3 kcal/mol. Why are these steps highly exergonic? ...
Metabolic System and Exercise
Metabolic System and Exercise

... Metabolic By-Products and Fatigue w Short duration activities depend on anaerobic glycolysis and produce lactate and H+. w Cells buffer H+ with bicarbonate (HCO3) to keep cell pH between 6.4 and 7.1. ...
Teaching DNA, Proteins, and Protein Synthesis
Teaching DNA, Proteins, and Protein Synthesis

... The steps in protein synthesis are easier to understand because proteins are taught first. How changes in DNA affect the shape of proteins will be visualized. We also will connect Mendel’s concepts of genes & traits to the LEGO protein molecules produced. ...
Q26to35
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... FAS expression stimulated by insulin ...
Amino Acids - Chavis Biology
Amino Acids - Chavis Biology

... Amino acids are the basic units from which proteins are made. Plants can manufacture all of the amino acids they required from simpler molecules, but animals must obtain a number of ready-made amino acids (called essential amino acids) from their diet. All other amino acids can be constructed from t ...
Amino Acids
Amino Acids

Chapter 16 The Citric Acid Cycle
Chapter 16 The Citric Acid Cycle

... • A 2-carbon unit Acetyl-CoA is added to the cycle • And two CO2 molecules leave (but they are different carbons…) • During the course of changes in the carbon skeleton and its oxidation state • And the transfer of energy to form GTP (aka. the “Canadian $”) and reducing power, as NADH and FADH2 • It ...
Amino Acids - Chavis Biology
Amino Acids - Chavis Biology

... Amino acids are the basic units from which proteins are made. Plants can manufacture all of the amino acids they required from simpler molecules, but animals must obtain a number of ready-made amino acids (called essential amino acids) from their diet. All other amino acids can be constructed from t ...
EXPLORING PROTEIN STRUCTURE
EXPLORING PROTEIN STRUCTURE

... eat a burger (vege or beef), you break the proteins down into single amino acids ready for use in building new proteins. And yes, proteins have the job of digesting proteins, they are known as proteases. There are only 20 different amino acids but they can be joined together in many different combin ...
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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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