• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Pyruvate Oxidation and the Citric Acid Cycle
Pyruvate Oxidation and the Citric Acid Cycle

... formation of FADH2. Succinyl CoA releases coenzyme A, becoming succinate, the energy thus released converts GDP to GTP, which in turn converts ADP to ATP. ...
Biochemistry (CHEM XL 153A)
Biochemistry (CHEM XL 153A)

... Daily Quizes: There will be a ten minute daily quiz (except on exam days) from 7:05 to 7:15 PM. These quizes will total 100 points towards the final grade (equal to one exam grade). No make-up quizes will be given, students arriving late will receive a zero for that days quiz. Regular on time attend ...
PDF
PDF

... of histolysis may depend primarily upon a changed hormonal balance presumably causing a disturbed respiratory metabolism. This starts the causal sequence: accumulation of acid metabolites, activation of cell proteolytic enzymes, proteolysis of even the respiratory enzymes, further changed respirator ...
8 Introduction to Metabolism Notes
8 Introduction to Metabolism Notes

... Anabolic pathways consume energy to build complicated molecules from simpler compounds. They are also called biosynthetic pathways. D. The energy released by catabolic pathways can be stored and then used to drive anabolic pathways. Energy is the capacity to do work. Energy exists in various forms, ...
Additional Study Questions for Fuel Metabolism Lectures
Additional Study Questions for Fuel Metabolism Lectures

... (3) Why does fasting result in an increase in liver concentrations of PEP carboxykinase and glucose-6-phosphatase. (4) Explain why the sigmoidal kinetics behavior of glucokinase helps the liver to adjust its metabolic activities to the amount of available glucose. (5) After several days of starvatio ...
Introduction to Metabolism Notes
Introduction to Metabolism Notes

... Anabolic pathways consume energy to build complicated molecules from simpler compounds. They are also called biosynthetic pathways. D. The energy released by catabolic pathways can be stored and then used to drive anabolic pathways. Energy is the capacity to do work. Energy exists in various forms, ...
Ecology
Ecology

... B. During photosynthesis, energy from the ...
Test File - Galena Park ISD Moodle
Test File - Galena Park ISD Moodle

... D. None of these apply 2. How much amount of nitrogen gas makes up the atmosphere part of the earth? E. 10% F. 15% G 78% H. 100% 3. Nitrogen gas is an abundant gas on earth. Which of the following statements describes the importance of nitrogen gas? A. it is used for photosynthesis in plants B. it i ...
Mrs
Mrs

... This is a model of a __________________________________. There are __________ subunits present. Another name for a subunit is _________________________. If this is a model of starch , the whole thing is an example of a ________-saccaride. Each individual subunit is then called a ____________________ ...
ChemistryofLife
ChemistryofLife

... Enzymes work by a physical fit (Lock and Key) between the enzyme molecule and its SUBSTRATE, the reactant being catalyzed. Enzymes reduces the activation energy for the chemical reaction to occur. After the reaction, the enzyme is released and is unchanged, so it can be used many times Enzyme names ...
An Introduction to Metabolism by Dr. Ty C.M. Hoffman
An Introduction to Metabolism by Dr. Ty C.M. Hoffman

... stripped  from  the  fuel  in  the  process  are  transferred  to  NAD+,  reducing  it  into  NADH+H+.  This   represents  some  of  the  energy  that  used  to  be  in  the  glucose  molecule.  Additionally,  some   energy  released ...
Chapter 7 Notes
Chapter 7 Notes

... ATP is called free energy because it is available to do any type of work needed in our cells called Kinetic Energy (energy available for work) The amount of energy released is measure in calories or kilocalories The more energy a type of food can release the more calories it has ...
Photosynthesis
Photosynthesis

... 2. Carbon dioxide is fixed to RuBP by the enzyme Rubisco. 3. One - 3 Carbon molecule known as G3P is formed for each Carbon dioxide(3) that gets fixed. It takes two turns of the cycle to produce ONE 6 carbon molecule of sugar. 4. ATP and NADPH are necessary to run this reaction and generate ADP, and ...
Name 1 Bio 451 12th November, 1999 EXAM III This
Name 1 Bio 451 12th November, 1999 EXAM III This

... a) Proteins with the sequence Lys-Phe-Glu-Arg-Gln are selectively degraded by proteasomes. b) Proteins containing sequences rich in Pro, Glu, Ser and Thr often have short halflives. c) The additionof ubiquitin protects segments of a protein from proteolysis. d) Lysosomal proteases degrade only extra ...
Chapter 5 The Structure and Function of Macromolecules
Chapter 5 The Structure and Function of Macromolecules

Document
Document

Citric Acid Cycle Catalysts
Citric Acid Cycle Catalysts

... building block not only in the production of energy at this level, but also in the synthesis of essential fatty acids fundamental to the nerve structures of the organism. Cis-Aconitic acid This is a metabolite which forms very fleetingly. A lack of its regulation leads to general problems of tissue ...
Protein Folding Lab with Balloons
Protein Folding Lab with Balloons

... Name_______________________________________________________________________ ...
Chapter 10: Photosynthesis
Chapter 10: Photosynthesis

... d. generates a gradient e. protons move across the membrane f. electron is passed to an 4. Chemiosmosis a. protons that build up on one side flow back through b. here is formed V. Parts of the Photocenter A. Antenna Complex 1. pigment molecules gather 2. feed light to the reaction center B. Reaction ...
Glycolysis Puzzle: Concept Map of "Splitting of Glucose"
Glycolysis Puzzle: Concept Map of "Splitting of Glucose"

... The PO4 group is removed and transferred to ADP resulting in the production an ______molecule via substrate level phosphorylation. [delta G = -4.0 kcal/mole] ...
File
File

... 24. Your friend is having difficulty keeping track of the energy flow from glucose through glycolysis, the Krebs cycle, and electron transport. Your best advice would be to a. follow ATP produced b. follow the electrons c. follow the NAD+ production d. follow the organic molecules. 25. A mutant str ...
Compartmentalisation of metabolic pathways
Compartmentalisation of metabolic pathways

... • Nucleus ...
Organic Compounds Essential to Human Functioning
Organic Compounds Essential to Human Functioning

... an acidic carboxyl group COOH (see Table 1) a variable group ...
AP bio midterm review 9
AP bio midterm review 9

... In this type of photosynthesis environmental CO2 is first incorporated into 4-carbon acids in cells known as mesophylls. These acids are transported to other cells known as bundle sheath cells. In these cells, the reaction is reversed, CO2 is released and subsequently used in the normal (C3) photosy ...
CTS Summary for the CTS Guide: Chemistry of Life Adult Content
CTS Summary for the CTS Guide: Chemistry of Life Adult Content

...  Changes in DNA (mutations) occur spontaneously at low rates. Some of these changes make no difference to the organism, whereas others can change cells and organisms. Only mutations in germ cells can create the variation that changes an organism's offspring.  In all but quite primitive cells, a co ...
< 1 ... 654 655 656 657 658 659 660 661 662 ... 905 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report