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Author: Francis Joseph Cole
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Author: Francis Joseph Cole
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: Francis Joseph Cole
Publisher:
ISBN:
Category : Protozoa
Languages : en
Pages : 78
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Book Description
Author: Francis Joseph Cole
Publisher:
ISBN: 9780598754950
Category :
Languages : en
Pages : 70
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Author: Francis Joseph Cole
Publisher:
ISBN:
Category : PROTOZOA
Languages : en
Pages : 64
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Book Description
Author: Graham Bell
Publisher: Cambridge University Press
ISBN: 0521361419
Category : Science
Languages : en
Pages : 220
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Book Description
Is ageing inevitable, or can senescence and death be evaded? Large animals and plants always age if they live long enough; even individual cells from their bodies cannot continue living and dividing indefinitely. Whether or not single-celled organisms also age and die, and what relation sex bore to the process of senescence, was the subject of vigorous debate and experimentation early in the last century. In this book, Dr Bell disinters and reanalyzes these forgotten experiments, and argues that protozoan lineages do indeed senesce, as the result of an accumulated load of mutations that can be shed only through sexual reproduction. This unexpected connection between sex and death is the central theme of a book that will interest all students of evolutionary biology, sexuality and senescence.
Author:
Publisher:
ISBN:
Category : Protozoology
Languages : en
Pages : 140
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Author: Orvil Roger Anderson
Publisher: Springer Science & Business Media
ISBN: 3662113406
Category : Science
Languages : en
Pages : 489
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Book Description
The protozoa are an eclectic assemblage of organisms encompassing a wide range of single-celled and multiple-celled colonial organisms lacking tissue organiza tion, but exhibiting remarkably refined biological behavior. In some modern classifications, they are classified as a subkingdom among the Protista (eukary otic single-celled organisms). Although they are not considered a formal cate gory by some taxonomists and some biologists consider the name inappropriate (inferring that they are the first unicellular animals, although some photosynthe size), it is still convenient to consider this group of organisms as an informal collection under the heading of protozoa. Their cosmopolitan distribution, sig nificant ecological role in mineral recycling and enhancement of carbon flow through lower trophic levels of food webs, and remarkable cellular adaptations to enhance survival in diverse environments make them significant organisms for biological investigation. In some cases, biologists are introduced to this group in first level courses or in invertebrate zoology, but never develop a full appreciation for the diverse and biologically sophisticated characteristics of these organisms. This book is intended as a survey of broad concepts in protozoan biology with an emphasis on comparative data. The focus is on the zoological aspects of the group. Topics more closely related to plantlike characteristics, as presented in books on phycol ogy, are not considered in detail here. A sound background in modern biology and an introduction to cellular biology will be helpful in understanding Chapters 15 and 16, which include a substantial amount of information on biochemistry.
Author: Richard Pinkham Hall
Publisher:
ISBN: 9781258317805
Category :
Languages : en
Pages : 690
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Author: Clifford Dobell
Publisher:
ISBN:
Category : Bacteriology
Languages : en
Pages : 435
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Author: Robert William Hegner
Publisher:
ISBN:
Category : Medical parasitology
Languages : en
Pages : 634
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Book Description
