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Author: David L. Kirk
Publisher: Cambridge University Press
Published: 1998
Total Pages: 210
ISBN-13: 9780521452076
DOWNLOAD EBOOKThis book reviews Volvox development and biology and, through this study, sheds light on the origins of multicellularity.
Author: Frank Watts Bancroft
Publisher:
Published: 1907
Total Pages: 12
ISBN-13:
DOWNLOAD EBOOKAuthor: František Baluška
Publisher: Springer Science & Business Media
Published: 2007-08-10
Total Pages: 331
ISBN-13: 0387469575
DOWNLOAD EBOOKhe biological sciences are dominated by the idea that cells are the functionally autonomous, physically separated, discrete units of life. TThis concept was propounded in the 19th century by discoveries of the cellular structuring of both plants and animals. Moreover, the ap parent autonomy of unicellular eukaryotes, as well as the cellular basis of the mammalian brain (an organ whose anatomy for a long while defied attempts to validate the idea of the cellular nature of its neurons), seemed to provide the final conclusive evidence for the completeness of *cell theory', a theory which has persisted in an almost dogmatic form up to the present day. However, it is very obvious that there are numerous observations which indicate that it is not the cells which serve as the basic units of biological life but that this property falls to some other, subcellular assemblage. To deal with this intricate problem concerning the fundamental unit of living matter, we proposed the so-called Cell Body concept which, in fact, devel ops an exceedingly original idea proposed by Julius Sachs at the end of the 19th century. In the case of eukaryotic cells, DNA-enriched nuclei are intimately associated with a microtubular cytoskeleton. In this configuration—as a Cell Body—these two items comprise the fundamental functional and struc tural unit of eukaryotic living matter. The Cell Body seems to be inherent to all cells in all organisms.
Author: George Busk
Publisher:
Published: 1853
Total Pages: 42
ISBN-13:
DOWNLOAD EBOOKAuthor: Clement Markert
Publisher: Elsevier
Published: 2012-12-02
Total Pages: 367
ISBN-13: 0323153976
DOWNLOAD EBOOKThe Developmental Biology of Reproduction documents the proceedings of the 33rd symposium of the Society for Developmental Biology. Reproductive Biology was selected as the main theme of the symposium. The symposium aimed to draw center attention on basic aspects of reproduction in both plants and animals in the hope of stimulating research that might provide the necessary foundation for effective, practical control of human reproduction. Five areas were selected for emphasis: the formation of eggs and sperm; the activation of the egg to develop into an embryo; the genetic and biochemical events underlying the early development of the embryo; the hormonal controls operating in the reproductive process; and the general control of implantation and growth of the mammalian embryo in the uterus. Thirteen reports were given by distinguished researchers in each of these areas. All biologists interested in a broad understanding of problems of reproduction will find this symposium interesting and important for their own work.
Author: Barbara Ann Mitchell
Publisher:
Published: 1980
Total Pages: 182
ISBN-13:
DOWNLOAD EBOOKAuthor: Danton O'Day
Publisher: Elsevier
Published: 2012-12-02
Total Pages: 425
ISBN-13: 0323150977
DOWNLOAD EBOOKSexual Interactions in Eukaryotic Microbes provides a comprehensive discussion of the sexual processes of eukaryotic microorganisms. The book is organized into three parts. Part I presents an overview of intercellular communication, covering the modes of cellular communication and the benefit of using eukaryotic microbes for studying cell communication. Part II on pheromonal interactions includes studies on the role of sex pheromones in organisms such as Saccharomyces cerevisiae, Allomyces, Volvox, and Neurospora crassa. Part III on cell surface interactions presents studies such as sexual interactions in Saccharomyces cerevisiae; sexual interactions of the cell surface in Paramecium; and the genetics and cellular biology of sexual development in Ustilago violacea. This book will be of value on a multitude of levels: from a general reference text to a source of research ideas. It will appeal to a wide spectrum of readers in a large number of disciplines, but will be particularly useful to cell biologists, microbiologists, protozoologists, and mycologists interested in the study of cellular communication.
Author: Ursula Goodenough
Publisher: Academic Press
Published: 2023-02-15
Total Pages: 462
ISBN-13: 0128224584
DOWNLOAD EBOOKThe Chlamydomonas Sourcebook, 3rd Edition Introduction to Chlamydomonas and Its Laboratory Use (Volume 1) The gold-standard reference?covering the basic biology of the Chlamydomonas alga and techniques for its laboratory analysis Originally published as the standalone Chlamydomonas Sourcebook, then expanded as the first volume in a three-part comprehensive gold-standard reference,?The Chlamydomonas Sourcebook: Introduction to Chlamydomonas and Its Laboratory Use?has been fully revised and updated to include a?wealth of new resources for the Chlamydomonas community. Early chapters cover current understandings of its taxonomy, ultrastructure, cell and life cycles, and nuclear and organelle genomes, followed by technique-oriented chapters covering such topics as cell culture, mutagenesis, genetic analysis, construction of mutant libraries, and protein localization using immunofluorescence. This volume presents the latest in research and best practices, making it a must-have resource for researchers and students working in plant science and photosynthesis, fertility, mammalian vision, and biochemistry; crop scientists; plant physiologists; and plant, molecular, and human disease biologists. - Remains the only complete reference to provide both the historical background and the most up-to-date information and applications on Chlamydomonas - Includes best practices for applications in research, including methods for culture, genetic analysis, genomic and transcriptomic analysis, and mutant screening - Helps researchers solve common laboratory problems, provides details on the properties of particular strains, and offers a comprehensive survey of molecular approaches - Provides a broad perspective for studies in cell and molecular biology, genetics, plant physiology, and related fields
Author: Annie May Hurd-Karrer
Publisher:
Published: 1918
Total Pages: 148
ISBN-13:
DOWNLOAD EBOOKAuthor: Aaron Franklin Shull
Publisher:
Published: 1920
Total Pages: 470
ISBN-13:
DOWNLOAD EBOOKZoölogy is the science of animals. This was the definition centuries ago, when zoölogy was almost exclusively the classification and naming of animals. Since that time there has arisen a vast body of doctrine concerning modes of life, life processes, inter-relations of animals, development, distribution, and descent, most of which has little bearing on classification, which is now founded upon principles as basic as those underlying other branches of science. For the purposes of this volume, anything that has to do with animals is part of zoölogy. This book is, in practice, one long definition of zoölogy. It includes morphology, physiology, ecology, zoögeography, paleontology, taxonomy, and evolution as part of the zoölogical sciences. This book, being a general discussion, will contain elementary facts and principles from each of these branches of science. Students should find it a useful exercise to stop and reflect which of the divisions of zoölogy are, at any given moment, actually being studied.
