Physics of Bioenergetic Processes

Physics of Bioenergetic Processes PDF

Author: L. A. Blumenfeld

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 141

ISBN-13: 3642685250

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According to its definition, synergetics is concerned with the cooperation of indi vidual parts of a system that produces macroscopic temporal, spatial or functional structures. A good deal of the volumes published within this series dealt with the formation of truly macroscopic structures which we can s. ee with our eyes. A common scheme could be developed to understand the formation of many patterns through self-organization. In particular, we have to use concepts which go beyond conventio nal thermodynamics. New ideas became crucial. We have to study kinetic processes, and often few highly excited degrees of freedom play the decisive role in the evo lution of structures. Over the past years it has turned out that quite similar lines of approach apply to a world which at first sight would be classified as "microsco pic". That world consists of processes in which biomolecules are involved. An impor tant example for the problems occurring there is provided by Manfred Eigen's theory of evolution of life at the molecular level (cf. his contribution to Volume 17 of this series). Another important example has been provided by Blumenfeld's book on problems of biological physics (Vol. 7 of this series). There it was proposed to treat biological molecules as machines which, in a certain sense, work through "macros copic" degrees of freedom.

The Evolution of the Bioenergetic Processes

The Evolution of the Bioenergetic Processes PDF

Author: E. Broda

Publisher: Elsevier

Published: 2014-05-18

Total Pages: 242

ISBN-13: 1483136132

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The Evolution of the Bioenergetic Processes deals with the evolution of the bioenergetic processes, from fermentation to photosynthesis and respiration, and their interrelationships in prokaryotes and eukaryotes. Topics covered range from the origin of life to the evolution of eobionts, organisms, and energy-rich compounds. Fermentation, photoorganotrophy, and photosynthesis in bacteria and plants are also discussed. Comprised of 25 chapters, this book begins with an overview of energy and entropy in the biosphere, followed by a detailed treatment of the evolution of bioenergetics based on the pattern of the bioenergetic processes in extant organisms. The reader is then introduced to the events involved in the origin of life; the evolution of eobionts and organisms; and the origin of energy-rich compounds, particularly nucleotides of the adenylic acid system. Subsequent chapters focus on fermentation and photosynthesis; assimilation of carbon dioxide; photoorganotrophy, chemolithotrophy, and photolithotrophy; and aerobic and anaerobic respiration of prokaryotes. The book also considers the energy supply of protozoa and fungi before concluding with an analysis of the history of atmospheric oxygen. This monograph will be of interest to evolutionary biologists.

Foundations of Bioenergetics

Foundations of Bioenergetics PDF

Author: Harold Morowitz

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 365

ISBN-13: 0323154050

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Foundations of Bioenergetics provides an introduction to the physical foundations of bioenergetics and the methods of applying these constructs to biological problems. It combines parts of thermal physics, biochemistry, ecology, and cellular and organismic biology into a single coherent work. Much of the material in this volume comes from ""Entropy for Biologists,"" an introductory thermodynamics book aimed particularly at life scientists. Some of the topics originally appeared in the monograph ""Energy Flow in Biology."" The current volume expands on that material with respect to biological applications and attempts to bridge the gap between physics and biology. The book explains basic concepts such as energy, temperature, the second law of thermodynamics, entropy, information theory, and statistical mechanics. It discusses the relations between thermodynamics and statistical mechanics, free-energy functions, radiant energy, the free energy of cells and tissue, chemical kinetics, and cyclic flows. It examines the relationships between energy flows and biological processes; applications of the concepts of Gibbs free energy, chemical potential, and activity; and measurements of temperature, energy, and thermochemical quantities. The book also includes chapters that deal with irreversible dynamics, irreversible theory, and osmotic flow.

Principles of Bioenergetics

Principles of Bioenergetics PDF

Author: Vladimir P. Skulachev

Publisher: Springer Science & Business Media

Published: 2012-12-15

Total Pages: 435

ISBN-13: 364233430X

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Principles of Bioenergetics summarizes one of the quickly growing branches of modern biochemistry. Bioenergetics concerns energy transductions occurring in living systems and this book pays special attention to molecular mechanisms of these processes. The main subject of the book is the "energy coupling membrane" which refers to inner membranes of intracellular organelles, for example, mitochondria and chloroplasts. Cellular cytoplasmic membranes where respiratory and photosynthetic energy transducers, as well as ion-transporting ATP-synthases (ATPases) are also part of this membrane. Significant attention is paid to the alternative function of mitochondria as generators of reactive oxygen species (ROS) that mediate programmed death of cells (apoptosis and necrosis) and organisms (phenoptosis). The latter process is considered as a key mechanism of aging which may be suppressed by mitochondria-targeted antioxidants.

Bioenergetics

Bioenergetics PDF

Author: Davor Juretic

Publisher: CRC Press

Published: 2021-12-23

Total Pages: 288

ISBN-13: 1351172751

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Bioenergetics deals with the very first energy transformation steps performed by living cells. Increased dissipation is the primary effect of processing external energy packages. Enzyme-supported charge separation is the minor but essential outcome for maintaining life. This book explores the usefulness of dissecting the entropy production of enzymes involved in cellular defenses, fermentation, respiration, and photosynthesis, assuming that tightly regulated dissipation is the hallmark of life. Researchers, educators, and students of life sciences can find in this text many examples of how we can use the interdisciplinary approach to study cells' virtuoso ability to connect the microscopic to the macroscopic world. Each chapter is a self-contained unit with a glossary and selected references for further reading.

Bioenergetics

Bioenergetics PDF

Author: Peter Gräber

Publisher: Birkhäuser

Published: 2012-12-06

Total Pages: 554

ISBN-13: 3034889941

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Bioenergetics, the topic of volume 5 of this Series, is concerned with the energetics, the kinetics, and the mechanisms of energy conversion in biological systems. This phenomenon can be investigated on diffe rent levels of complexity. On a global level the role of biological pro cesses for the steady state of our enviroment is considered. At the physiological level, the relation between energy input and the physiolo gical state of an organism is of interest, while at the cellular level the biochemical pathways for degradation and synthesis of all relevant substrates is investigated. At present the majority of bioenergetic stu dies pertain to the molecular level. The processes in a cell are cataly zed by a large number of proteins called enzymes. The enzymes in volved in energy transduction can be considered as molecular ma chines which transform energy from one form into another, or transfer energy from one process to another. Living systems operate far from equilibrium and are open in the ther modynamic sense, i. e. they exchange energy and matter with the sur roundings. Chapter 1 presents the principles of non equilibrium thermo dynamics applied to biological systems. About 0. 05% of the energy from the sunlight which reaches the surface of the earth is used by plants and algae as well as some bacteria to synthesize organic com pounds, and thus supplies all organisms with the energy necessary for life.

Mechanisms in Bioenergetics

Mechanisms in Bioenergetics PDF

Author: Efraim Racker

Publisher: Academic Press

Published: 2014-05-10

Total Pages: 272

ISBN-13: 1483268934

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Advanced Biochemistry: Mechanisms in Bioenergetics provides information pertinent to the fundamental aspects of the mechanisms in bioenergetics. This book covers a variety of topics, including the enzymatic mechanism of ATP formation and the regulatory mechanisms that control its metabolic utilization. Organized into three parts encompassing 18 lectures, this book begins with an overview of the process of converting nutrients into forms of useful energy, which is the essence of energy metabolism. This text then explores the properties that have a specific bearing on the problem of oxidative phosphorylation. Other lectures consider the phosphoroclastic reaction with pyruvate, which plays a curious and apparently specific role in nitrogen fixation. This book discusses as well the operation of control mechanisms of energy metabolism in intact cells. The final lecture analyzes the rate-limiting steps in carbohydrate metabolism of various cells and some of the metabolic factors that govern them. This book is a valuable resource for graduate students.

Introduction to Bioenergetics

Introduction to Bioenergetics PDF

Author: S. Sundara Rajan

Publisher:

Published: 2003

Total Pages: 0

ISBN-13: 9788126113637

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Energy And Matter Are The Building Blocks Of The Universe As We Know It. Energy Which Has Been Defined As The Capacity To Do Work Is The Basis Of All Changes That Has Occurred Over A Period Of Time Since The Origin Of Universe.Introduction To Bioenergetics Deals With Energy Transformation Reactions In Living Systems. The First Chapter Deals With A General Survey Of Energy, Its Types, Laws Of Thermodynamics, Free Energy Etc. The Remaining 5 Chapters Analyse The Metabolism Processes In Living Organisms Which Are The Outward Manifestations Of Energy Transformations.The Book Is Meant To Be A Text Book For Students Of Life Science, Pharmacy, Agriculture Etc. At The Graduate And Post Graduate Level.