On the Evolution of the Biological Framework for Insight
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Sociobiology and Conflict. Evolutionary Perspectives On
S. Afr. J. Zool. 1992,27(2) 91 Book Reviews demonstration of heritability. If there is no heritable variance in a trait, selection cannot operate. Glib statements like the following: ' ... for any socially living mammalian species the competing sets of needs under discussion are very general and basic. We must there Sociobiology and Conflict. Evolutionary fore assume thal the varill1lce in the balance between tlwse sets of basic needs has strong genetic roots' (van der Molen, p. 65, my perspectives on competition, coopera emphasis) tion, violence and warfare. are inadequate. Without the demonstration of heritability, adapta tionist explanations remain 'just-so stories'. This point has been made many times in the past, but the message has still not been Edited by J. van der Dennen and V. Falger received and understood. It is 15 years since the pUblication of Published by Chapman and Hall, London Wilson's opus magnum, Sociobiology. Surely this is time enough 338 pages for workers who posit genetic explanations to begin to accumulate some genetic data? Some of us still like to believe that biology is a science - even when it is applied to the human species. A tho This book comprises 14 essays that explore the potential signifi rough scientific treatment demands critical examination of all prior cance of sociobiological theorising to an understanding of human assumptions. aggressive behaviour, 'in the hope that we might better understand Then there is the far more fundamental question as to whether and come to terms with the problems of human conflict' (p. 14). or not theories regarding the selective origin of I18gressive behavi The thesis advanced by the majority of the contributors is predica our in individuals - regardless of their merits and demerits - ted on the following notions: (i) that aggressive behaviour in can tell us anything whatsoever about the conduct of war between humans has a genetic basis which is sufficiently deterministic to nations. -
Introduction to the Cell Cell History Cell Structures and Functions
Introduction to the cell cell history cell structures and functions CK-12 Foundation December 16, 2009 CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based collaborative model termed the “FlexBook,” CK-12 intends to pioneer the generation and distribution of high quality educational content that will serve both as core text as well as provide an adaptive environment for learning. Copyright ©2009 CK-12 Foundation This work is licensed under the Creative Commons Attribution-Share Alike 3.0 United States License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/3.0/us/ or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA. Contents 1 Cell structure and function dec 16 5 1.1 Lesson 3.1: Introduction to Cells .................................. 5 3 www.ck12.org www.ck12.org 4 Chapter 1 Cell structure and function dec 16 1.1 Lesson 3.1: Introduction to Cells Lesson Objectives • Identify the scientists that first observed cells. • Outline the importance of microscopes in the discovery of cells. • Summarize what the cell theory proposes. • Identify the limitations on cell size. • Identify the four parts common to all cells. • Compare prokaryotic and eukaryotic cells. Introduction Knowing the make up of cells and how cells work is necessary to all of the biological sciences. Learning about the similarities and differences between cell types is particularly important to the fields of cell biology and molecular biology. -
The Cell-Theory: a Restatement, History, and Critique Part III
*57 The Cell-theory: A Restatement, History, and Critique Part III. The Cell as a Morphological Unit By JOHN R. BAKER (From the Department of Zoology and Comparative Anatomy, Oxford) SUMMARY A long time elapsed after the discovery of cells before they came to be generally regarded as morphological units. As a first step it was necessary to show that the cell-walls of plants were double and that cells could therefore be separated. The earliest advances in this direction were made by Treviranus (1805) and Link (1807). The idea of a cell was very imperfect, however, so long as attention was con- centrated on its wall. The first person who stated clearly that the cell-wall is not a necessary constituent was Leydig (1857). Subsequently the cell came to be regarded as a naked mass of protoplasm with a nucleus, and to this unit the name of protoplast was given. The true nature of the limiting membrane of the protoplast was discovered by Overton (1895). The plasmodesmata or connective strands that sometimes connect cells were prob- ably first seen by Hartig, in sieve-plates (1837). They are best regarded from the point of view of their functions in particular cases. They do not provide evidence for the view that the whole of a multicellular organism is basically a protoplasmic unit. Two or more nuclei in a continuous mass of protoplasm appear to have been seen for the first time in 1802, by Bauer. That an organism may consist wholly of a syn- cytium was discovered in i860, in the Mycetozoa. -
Unifying Principles of Biology - Advanced
Unifying Principles of Biology - Advanced Douglas Wilkin, Ph.D. Niamh Gray-Wilson Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) AUTHORS Douglas Wilkin, Ph.D. To access a customizable version of this book, as well as other Niamh Gray-Wilson interactive content, visit www.ck12.org CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Using an open-source, collaborative, and web-based compilation model, CK-12 pioneers and promotes the creation and distribution of high-quality, adaptive online textbooks that can be mixed, modified and printed (i.e., the FlexBook® textbooks). Copyright © 2016 CK-12 Foundation, www.ck12.org The names “CK-12” and “CK12” and associated logos and the terms “FlexBook®” and “FlexBook Platform®” (collectively “CK-12 Marks”) are trademarks and service marks of CK-12 Foundation and are protected by federal, state, and international laws. Any form of reproduction of this book in any format or medium, in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Creative Commons Attribution-Non-Commercial 3.0 Unported (CC BY-NC 3.0) License (http://creativecommons.org/ licenses/by-nc/3.0/), as amended and updated by Creative Com- mons from time to time (the “CC License”), which is incorporated herein by this reference. -
History and Scope of Microbiology the Story of Invisible Organisms
A study material for M.Sc. Biochemistry (Semester: IV) Students on the topic (EC-1; Unit I) History and Scope of Microbiology The story of invisible organisms Dr. Reena Mohanka Professor & Head Department of Biochemistry Patna University Mob. No.:- +91-9334088879 E. Mail: [email protected] MICROBIOLOGY 1. WHAT IS A MICROBIOLOGY? Micro means very small and biology is the study of living things, so microbiology is the study of very small living things normally too small that are usually unable to be viewed with the naked eye. Need a microscope to see them Virus - 10 →1000 nanometers Bacteria - 0.1 → 5 micrometers (Human eye ) can see 0.1 mm to 1 mm Microbiology has become an umbrella term that encompasses many sub disciplines or fields of study. These include: - Bacteriology: The study of bacteria - Mycology: Fungi - Protozoology: Protozoa - Phycology: Algae - Parasitology: Parasites - Virology: Viruses WHAT IS THE NEED TO STUDY MICROBIOLOGY • Genetic engineering • Recycling sewage • Bioremediation: use microbes to remove toxins (oil spills) • Use of microbes to control crop pests • Maintain balance of environment (microbial ecology) • Basis of food chain • Nitrogen fixation • Manufacture of food and drink • Photosynthesis: Microbes are involved in photosynthesis and accounts for >50% of earth’s oxygen History of Microbiology Anton van Leeuwenhoek (1632-1723) (Dutch Scientist) • The credit of discovery of microbial world goes to Anton van Leeuwenhoek. He made careful observations of microscopic organisms, which he called animalcules (1670s). • Antoni van Leeuwenhoek described live microorganisms that he observed in teeth scrapings and rain water. • Major contributions to the development of microbiology was the invention of the microscope (50-300X magnification) by Anton von Leuwenhoek and the implementation of the scientific method. -
Biology (BIOL) 1
Biology (BIOL) 1 Biology (BIOL) Courses BIOL 0848. DNA: Friend or Foe. 3 Credit Hours. This course is typically offered in Fall. Through the study of basic biological concepts, think critically about modern biotechnology. Consider questions like: What are the ethical and legal implications involving the gathering and analysis of DNA samples for forensic analysis and DNA fingerprinting? Are there potential discriminatory implications that might result from the human genome project? What are embryonic stem cells, and why has this topic become an important social and political issue? Will advances in medicine allow humans to live considerably longer, and how will a longer human life span affect life on earth? We will learn through lectures, lecture demonstrations, problem solving in small groups and classroom discussion, and make vivid use of technology, including short videos from internet sources such as YouTube, electronic quizzes, imaging and video microscopy. NOTE: This course fulfills a Science & Technology (GS) requirement for students under GenEd and the Science & Technology Second Level (SB) requirement for students under Core. Students cannot receive credit for this course if they have successfully completed Biology 0948. Course Attributes: GS Repeatability: This course may not be repeated for additional credits. BIOL 0948. Honors DNA: Friend or Foe. 3 Credit Hours. This course is not offered every year. Through the study of basic biological concepts, think critically about modern biotechnology. Consider questions like: What are -
Biological Atomism and Cell Theory
Studies in History and Philosophy of Biological and Biomedical Sciences 41 (2010) 202–211 Contents lists available at ScienceDirect Studies in History and Philosophy of Biological and Biomedical Sciences journal homepage: www.elsevier.com/locate/shpsc Biological atomism and cell theory Daniel J. Nicholson ESRC Research Centre for Genomics in Society (Egenis), University of Exeter, Byrne House, St. Germans Road, Exeter EX4 4PJ, UK article info abstract Keywords: Biological atomism postulates that all life is composed of elementary and indivisible vital units. The activ- Biological atomism ity of a living organism is thus conceived as the result of the activities and interactions of its elementary Cell theory constituents, each of which individually already exhibits all the attributes proper to life. This paper sur- Organismal theory veys some of the key episodes in the history of biological atomism, and situates cell theory within this Reductionism tradition. The atomistic foundations of cell theory are subsequently dissected and discussed, together with the theory’s conceptual development and eventual consolidation. This paper then examines the major criticisms that have been waged against cell theory, and argues that these too can be interpreted through the prism of biological atomism as attempts to relocate the true biological atom away from the cell to a level of organization above or below it. Overall, biological atomism provides a useful perspective through which to examine the history and philosophy of cell theory, and it also opens up a new way of thinking about the epistemic decomposition of living organisms that significantly departs from the phys- icochemical reductionism of mechanistic biology. -
Course Descriptions
COURSE DESCRIPTIONS ABR 1103 Basic Metal Repair I (3-0-3) construction using frame alignment equipment will be The straightening, alignment, and fitting of major panels is provided. The fundamentals of welding, heating, cutting, taught. Procedures necessary to rough, shrink, bump, and and shaping are included. Prerequisite: ABR 1203 Body finish are included. Emphasis in this course is on theory and Frame Alignment I. and practical application. Safety is emphasized. ABR 2702 Painting and Estimating II (2-0-2) ABR 1202 Application Lab I (0-4-2) This course is a continuation of ABR 1302 (Painting and This is a practical application lab that supports course Estimating I) with emphasis on practical application. This objectives for ABR 1103 (Basic Metal Repair I), ABR 1203 course includes skills and technical knowledge in the (Body and Frame Alignment I), and ABR 1302 (Painting preparation of metal for paint, chemical stripping of old and Estimating I). finishes, use and maintenance of spray painting equipment, mixing and spraying of all types of automotive finishes, ABR 1203 Body and Frame Alignment I (3-0-3) and identification of common materials used. Safety is Students will receive instruction in the use of frame emphasized. Prerequisite: ABR 1302 Painting and equipment and frame construction, sectioning, and Estimating straightening. Experience working with unitized construction using frame alignment equipment will be ABR 2905 Related Body Repair (0-10-5) provided. The fundamentals of welding, heating, cutting, This course includes the removal and replacement of glass, and shaping are included. Emphasis in this course is on trim, electrical wiring, and the repair of plastic components. -
Chapter 1 Microbiology—The Science
Chapter 1 Microbiology—The Science Terms Introduced in This Chapter After reading Chapter 1, you should be familiar with the following terms. These terms are defined in Chapter 1 and in the Glossary. Abiogenesis Mycology Antibiotic Nonpathogens Bacteriologist Obligate intracellular pathogens Bacteriology Opportunistic pathogens Biogenesis Paleomicrobiology Biology Parasites Bioremediation Parasitologist Biotechnology Parasitology Decomposers Pasteurization Etiologic agent Pathogens Etiology Petri dish Fastidious microorganisms Phycologist Genetic engineering Phycology In vitro Phytoplankton In vivo Plankton Indigenous microflora Protozoologist Infectious diseases Protozoology Koch's Postulates Pure culture Microbial ecology Saprophyte Microbial intoxications Toxin Microbiologist Ubiquitous Microbiology Virologist Microorganisms Virology Microscope Zoonoses (sing., zoonosis) Mycologist Zooplankton Insight Additional Careers in Microbiology Agricultural Microbiology Agricultural microbiology is an excellent career field for individuals with interests in agriculture and microbiology. Included in the field of agricultural microbiology are studies of the beneficial and harmful roles of microbes in soil formation and fertility; in carbon, nitrogen, phosphorus, and sulfur cycles; in diseases of plants; in the digestive processes of cows and other ruminants; and in the production of crops and foods. Many different viruses, bacteria, and fungi cause plant diseases. A food microbiologist is concerned with the production, processing, storage, cooking, -
Parasitology
Parasitology 020314TR Online Ordering Available Parasitology Table of Contents A Culture of Service™ 1 Books Headquarters 2 Parasitology Transports 1430 West McCoy Lane Santa Maria, CA 93455 800.266.2222 : phone 6 Total Fix Procedure 805.346.2760 : fax [email protected] 7 Fecal Concentrating Systems www.HardyDiagnostics.com 8 Centrifuge Tubes Distribution Centers Santa Maria, California 9 Stains and Reagents Olympia, Washington Salt Lake City, Utah Phoenix, Arizona 11 Staining Accessories Dallas, Texas Springboro, Ohio 12 Control Slides for Stains Lake City, Florida Albany, New York 13 Parasite Suspensions Raleigh, North Carolina 14 Culture Media 15 11 Ways to Make a Better Slide 17 Microscope Supplies 19 Rapid Tests The Quality Management System at the Hardy Diagnostics manufacturing facility is certified to ISO 13485. Copyright © 2014 Hardy Diagnostics Books Cases in Human Parasitology This book contains 62 case studies that focus solely on parasites which adversely affect humans. Challenging cases with details regarding non-parasitic infections whose symptoms closely resemble those of parasitic infections are included. By Judith S. Heelan, 256 pages, softcover, ASM Press, 2004, Each................................................................................5812961 Diagnostic Medical Parasitology This book contains updates and advances in the field of diagnostic medical parasitology and reports on the dramatic changes that have occurred in this field. Newly recognized parasites, alternative diagnostic techniques defined -
Cell Theory the CELL THEORY GREW out of the WORK of MANY SCIENTISTS and IMPROVEMENTS in the MICROSCOPE
Cell Theory THE CELL THEORY GREW OUT OF THE WORK OF MANY SCIENTISTS AND IMPROVEMENTS IN THE MICROSCOPE. Many scientists contributed to the cell theory. ROBERT HOOKE He was the first person to look at cells and named them. He looked at cork cells which are not living. It is the bark of a tree so they are dead plant cells. They are small squares and they reminded him of the small rooms in a monastery called cells ANTON VAN LEEUWENHOEK Credited with improving the microscope. (Zacharias Janssen is credited with discovering/creating microscope). Leeuwenhoek’s microscope could magnify 200x the human eye! Today’s microscopes can magnify up to 1500! MATTHIAS SCHLEIDEN was a German botanist (scientist who studies plants.) He found that the plant parts he examined were made of cells. He made the generalization that all plants were made of cells. THEODOR SCHWANN Studied animals. His microscopic investigations of animal parts led him to generalize that all animals are made of cells After looking at Schleiden’s work ,he further proposed that all organisms are made of cells. RUDOLF VIRCHOW- OMNIS CELLULA C CELLULA”: ALL CELLS FROM CELLS (1855) German doctor that said that new plant cells arise only from existing plant cells, and new animal cells arise only from existing animal cells. Building off the work of Redi (1668) who disproved the idea of spontaneous generation in his experiments about rotting meat. LOUIS PASTEUR-GERM THEORY 1856-Used the microscope to discover that tiny, one- celled (eukaryotic) yeast created alcoholic fermentation and that other one-celled, rod-shaped organisms (prokaryotic bacteria) caused beverages to spoil. -
Parasitology Meets Ecology on Its Own Terms: Margolis Et Al
Parasitology Meets Ecology on Its Own Terms: Margolis et al. Revisited Author(s): Albert O. Bush, Kevin D. Lafferty, Jeffrey M. Lotz and Allen W. Shostak Source: The Journal of Parasitology, Vol. 83, No. 4 (Aug., 1997), pp. 575-583 Published by: The American Society of Parasitologists Stable URL: http://www.jstor.org/stable/3284227 Accessed: 10-06-2015 22:17 UTC Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://www.jstor.org/page/ info/about/policies/terms.jsp JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. The American Society of Parasitologists is collaborating with JSTOR to digitize, preserve and extend access to The Journal of Parasitology. http://www.jstor.org This content downloaded from 128.111.90.61 on Wed, 10 Jun 2015 22:17:26 UTC All use subject to JSTOR Terms and Conditions J. Parasitol., 83(4), 1997 p. 575-583 ? American Society of Parasitologists 1997 PARASITOLOGYMEETS ECOLOGYON ITS OWN TERMS: MARGOLISET AL. REVISITED* Albert O. Busht, Kevin D. Laffertyt, Jeffrey M. Lotz?, and Allen W. Shostakll Departmentof Zoology, BrandonUniversity, Brandon, Manitoba, Canada R7A 6A9 ABSTRACT:We consider 27 populationand communityterms used frequentlyby parasitologistswhen describingthe ecology of parasites.We provide suggestions for various terms in an attemptto foster consistent use and to make terms used in parasite ecology easier to interpretfor those who study free-living organisms.We suggest strongly that authors,whether they agree or disagree with us, provide complete and unambiguousdefinitions for all parametersof their studies.