Origin of Eukaryotic Cells PDF Download

Author: Lynn Margulis
Publisher:
ISBN:
Category : Cells
Languages : en
Pages : 0

View

Book Description

Author: Patrick J. Keeling
Publisher:
ISBN: 9781621820284
Category : Science
Languages : en
Pages : 416

View

Book Description
All protists, fungi, animals, and plants on Earth are eukaryotes. Their cells possess membrane-bound organelles including a nucleus and mitochondria, distinct cytoskeletal features, and a unique chromosome structure that permits them to undergo mitosis or meiosis. The emergence of eukaryotic cells from prokaryotic ancestors about 2 billion years ago was a pivotal evolutionary transition in the history of life on Earth. But the change was abrupt, and few clues exist as to the nature of the intermediate stages. Written and edited by experts in the field, this collection from Cold Spring Harbor Perspectives in Biology examines evolutionary scenarios that likely led to the emergence and rapid evolution of eukaryotes. Contributors review the mechanisms, timing, and consequences of endosymbiosis, as well as molecular and biochemical characteristics of archaea and bacteria that may have contributed to the first eukaryotic lineage. They explore all of the available evidence, including clues from the fossil record and comparative genomics, and formulate ideas about the origin of genomic characteristics (e.g., chromatin and introns) and specific cellular features (e.g., the endomembrane system) in eukaryotes. Topics such as the origins of multicellularity and sex are also covered. This volume includes discussion of multiple evolutionary models that warrant serious attention, as well as lively debate on some of the most contentious topics in the field. It will thus be fascinating reading for evolutionary biologists, cell and molecular biologists, paleobiologists, and all who are interested in the history of life on Earth.

Author: Betsey Dexter Dyer
Publisher: Van Nostrand Reinhold Company
ISBN:
Category : Science
Languages : en
Pages : 376

View

Book Description

Author: Samantha Fowler
Publisher:
ISBN: 9781739015503
Category :
Languages : en
Pages : 0

View

Book Description
Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.

Author: Franklin M. Harold
Publisher: University of Chicago Press
ISBN: 022617431X
Category : Science
Languages : en
Pages : 318

View

Book Description
This comprehensive history of cell evolution “deftly discusses the definition of life” as well as cellular organization, classification and more (San Francisco Book Review). The origin of cells remains one of the most fundamental mysteries in biology, one that has spawned a large body of research and debate over the past two decades. With In Search of Cell History, Franklin M. Harold offers a comprehensive, impartial take on that research and the controversies that keep the field in turmoil. Written in accessible language and complemented by a glossary for easy reference, this book examines the relationship between cells and genes; the central role of bioenergetics in the origin of life; the status of the universal tree of life with its three stems and viral outliers; and the controversies surrounding the last universal common ancestor. Harold also discusses the evolution of cellular organization, the origin of complex cells, and the incorporation of symbiotic organelles. In Search of Cell History shows us just how far we have come in understanding cell evolution—and the evolution of life in general—and how far we still have to go. “Wonderful…A loving distillation of connections within the incredible diversity of life in the biosphere, framing one of biology’s most important remaining questions: how did life begin?”—Nature

Author: Sorin Sonea
Publisher: PUM
ISBN: 2760617564
Category : Reference
Languages : en
Pages : 107

View

Book Description
Prokaryotes are profoundly original, highly efficient microorganisms that have played a decisive role in the evolution of life on Earth. Although disjunct, taken together their cells form one global superorganism or biological system. One of the results of their non-Darwinian evolution has been the development of enormous diversity and bio-energetic variety. Prokaryotic cells possess standardized mechanisms for easy gene exchanges (lateral gene transfer) and they can behave like receiving and broadcasting stations for genetic material. Ultimately, the result is a global communication system based on the prokaryotic hereditary patrimony, by analogy, a two-billion-year-old world wide web for their benefit. Eukaryotes have evolved from the association of at least three complementary prokaryotic cells, and their subsequent development has been enriched and accelerated by symbioses with other prokaryotes. One of these symbioses was responsible for the origin of vascular plants which transformed vast sections of the continental surface of the Earth from deserts to areas with luxuriant, life-supporting vegetation. All forms of life on our planet are directly or indirectly sustained and enriched by the positive contribution of prokaryotes. Sorin Sonea and L�o G. Mathieu have been professors at the Department of Microbiology and Immunology (Faculty of Medicine) at the Universit� de Montr�al. They have long been advocates of the ideas presented in this book.

Author: William F. Martin
Publisher: Springer Science & Business Media
ISBN: 3540385029
Category : Science
Languages : en
Pages : 313

View

Book Description
The evolutionary origins of hydrogenosomes have been the subject of considerable debate. This volume closes the gap between the endosymbiotic theory for the origin of organelles and their incorporation into evolutionary theory. It reveals that identifying the genetic contribution to eukaryotes of the mitochondrial endosymbiosis, and revealing the functions of its descendent organelles, are key to understanding eukaryotic biology and evolution.

Author: Carlos E. Semino
Publisher: Springer Nature
ISBN: 3030759695
Category : Science
Languages : en
Pages : 112

View

Book Description
For humankind, the most irreducible idea is the concept of life itself. In order to understand that life is essentially an infinite process, transmitted from generation to generation, this book takes the reader on a fascinating journey that unravels one of our greatest mysteries. It begins with the premise that life is a fact—that it is everywhere; that it takes infinite forms; and, most importantly, that it is intrinsically self-perpetuating. Rather than exploring how the first living forms emerged in our universe, the book begins with our first primordial ancestor cell and tells the story of life—how it began, when that first cell diversified into many other cell types and organisms, and how it has continued until the present day. On this journey, the author covers the fundaments of biology such as cell division, diversity, regeneration, repair and death. The rather fictional epilogue even goes one step further and discusses ways how to literally escape the problem of limited recourse and distribution on our planet by looking at life outside the solar system. This book is designed to explain complex ideas in biology simply, but not simplistically, with a special emphasis on plain and accessible language as well as a wealth of hand-drawn illustrations. Thus, it is suitable not only for students seeking for an introduction into biological concepts and terminology, but for everyone with an interest in the fundamentals of life at the crossroad of evolutionary and cell biology.

Author: John Archibald
Publisher: OUP Oxford
ISBN: 0191636282
Category : Science
Languages : en
Pages : 174

View

Book Description
We are in the midst of a revolution. It is a scientific revolution built upon the tools of molecular biology, with which we probe and prod the living world in ways unimaginable a few decades ago. Need to track a bacterium at the root of a hospital outbreak? No problem: the offending germ's complete genetic profile can be obtained in 24 hours. We insert human DNA into E. coli bacteria to produce our insulin. It is natural to look at biotechnology in the 21st century with a mix of wonder and fear. But biotechnology is not as 'unnatural' as one might think. All living organisms use the same molecular processes to replicate their genetic material and the same basic code to 'read' their genes. The similarities can be seen in their DNA. Here, John Archibald shows how evolution has been 'plugging-and-playing' with the subcellular components of life from the very beginning and continues to do so today. For evidence, we need look no further than the inner workings of our own cells. Molecular biology has allowed us to gaze back more than three billion years, revealing the microbial mergers and acquisitions that underpin the development of complex life. One Plus One Equals One tells the story of how we have come to this realization and its implications.

Author: Nicholas H. Mann
Publisher: Springer Science & Business Media
ISBN: 1475713320
Category : Science
Languages : en
Pages : 284

View

Book Description
Considers the features common to bacteria that need light to grow, focusing on those features important in nature and useful in industrial applications. Because the species are scattered across the taxonomic chart, they have little in common except the physiology of photosynthesis and ecological dis