1:07
Archaea
In 1969, Carl Woese began using molecular sequences of RNA to study the evolutionary histo...
published: 26 Jul 2011
Author: Illinois1867
Archaea
In 1969, Carl Woese began using molecular sequences of RNA to study the evolutionary history of life on Earth, eventually determining the first "Tree of Life." This project led, in 1977, to the discovery of a third branch of life: the Archaea -- microorganisms distinct from Bacteria (which they resemble) and Eukaryotes (plants and animals). The concepts and discoveries emanating from this work have transformed biology, particularly evolution, ecology and microbiology.
21:17
Biology 2, Lecture 6: Bacteria and Archaea
Prokaryotes are the most abundant organisms on Earth. This is an introductory lecture that...
published: 30 Apr 2012
Author: Jason Walker
Biology 2, Lecture 6: Bacteria and Archaea
Prokaryotes are the most abundant organisms on Earth. This is an introductory lecture that describes their diversity and phylogeny.
2:33
Bacteria Habitats
videosbio.blogspot.com Bacteria were first observed by Antonie van Leeuwenhoek in 1676, us...
published: 15 Mar 2011
Author: miklosbajay
Bacteria Habitats
videosbio.blogspot.com Bacteria were first observed by Antonie van Leeuwenhoek in 1676, using a single-lens microscope of his own design. He called them "animalcules" and published his observations in a series of letters to the Royal Society. The name bacterium was introduced much later, by Christian Gottfried Ehrenberg in 1838. Louis Pasteur demonstrated in 1859 that the fermentation process is caused by the growth of microorganisms, and that this growth is not due to spontaneous generation. (Yeasts and molds, commonly associated with fermentation, are not bacteria, but rather fungi.) Along with his contemporary, Robert Koch, Pasteur was an early advocate of the germ theory of disease.[18] Robert Koch was a pioneer in medical microbiology and worked on cholera, anthrax and tuberculosis. In his research into tuberculosis, Koch finally proved the germ theory, for which he was awarded a Nobel Prize in 1905. In Koch's postulates, he set out criteria to test if an organism is the cause of a disease, and these postulates are still used today.[20] Though it was known in the nineteenth century that bacteria are the cause of many diseases, no effective antibacterial treatments were available. In 1910, Paul Ehrlich developed the first antibiotic, by changing dyes that selectively stained Treponema pallidum—the spirochaete that causes syphilis—into compounds that selectively killed the pathogen.[22] Ehrlich had been awarded a 1908 Nobel Prize for his work on immunology, and <b>...</b>
1:08
As100 Grandes Descobertas: A Biologia
1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discov...
published: 10 Feb 2009
Author: avgzarco
As100 Grandes Descobertas: A Biologia
1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discovers microorganisms in a drop of water. Using his own microscopes, he observes sperm, bacteria and red blood cells. His observations lay the foundation for the sciences of bacteriology and microbiology. 2. The Cell Nucleus (1831) While studying an orchid, botanist Robert Brown identifies a structure within the cells that he terms the "nucleus." 3. Archaea (1977) Carl Woese discovers bacteria are not the only simple-celled prokaryotes (unicellular organisms without a nucleus) on Earth. Many of the organisms classified in the new kingdom of Archaea are extremophiles. Some live at very high or low temperatures, others in highly saline, acidic or alkaline water. Some have been found in environments like marshland, sewage and soil. Archaea are usually harmless to other organisms and none are known to cause disease. 4. Cell Division (1879) Walther Flemming carefully observes that animal cells divide in stages and calls the process mitosis. Eduard Strasburger independently identifies a similar process of cellular division in plant cells. 5. Sex Cells (1884) August Weismann identifies that sex cells must have divided differently to end up with only half of a chromosomal set. This very special division of sex cells is called meiosis. Weismann's experiments with reproduction in jellyfish lead him to the conclusion that variations in offspring result from the union of a substance from the <b>...</b>
44:08
Bill Nye: Greatest Discoveries : Biology (Discovery Channel)
Please Subscribe To The Evolution Documentary YouTube Channel: www.youtube.com Broadcast 2...
published: 29 Sep 2012
Author: EvolutionDocumentary
Bill Nye: Greatest Discoveries : Biology (Discovery Channel)
Please Subscribe To The Evolution Documentary YouTube Channel: www.youtube.com Broadcast 2007. Hundreds of years before the DNA test, Micrographia championed the use of microscopes and set the stage for the first major discovery in biology: microorganisms. Learn how the secret of the cell was solved and how starfish led to the development of stem cell research. Where would we be today if it weren't for the scientists of the past? From the miniature world of genetics to the vast expanse of space, review the greatest discoveries of all time in this multi part series. Join host Bill Nye as he recounts the 100 most important discoveries and explains how each one has had a hand in shaping the modern world. Learn how the great discoveries were made, how they impacted the development of scientific knowledge. Discoveries Covered In This Episode: 1. Microorganisms (1674) Microscope lens grinder Anton Van Leeuwenhoek accidentally discovers microorganisms in a drop of water. Using his own microscopes, he observes sperm, bacteria and red blood cells. His observations lay the foundation for the sciences of bacteriology and microbiology. 2. The Cell Nucleus (1831) While studying an orchid, botanist Robert Brown identifies a structure within the cells that he terms the "nucleus." 3. Archaea (1977) Carl Woese discovers bacteria are not the only simple celled prokaryotes (unicellular organisms without a nucleus) on Earth. Many of the organisms classified in the new kingdom of Archaea are <b>...</b>
1:11
IGB Fellow Jim Davis
Spend a minute with IGB Fellow Jim Davis in our newest video series!...
published: 15 Mar 2012
Author: IGBIllinois
IGB Fellow Jim Davis
Spend a minute with IGB Fellow Jim Davis in our newest video series!
8:58
Evrim Teorisi Karşıtı 10 İddia ve Cevapları
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdak...
published: 24 Mar 2009
Author: XRazorhead
Evrim Teorisi Karşıtı 10 İddia ve Cevapları
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdaki sayfadan ulaşabilirsiniz. www.youtube.com EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University Of Michigan, 304 Alinti 7) Derek A. Roff, The evolution of wing dimorphism in insects, McGill <b>...</b>
3:32
The IGB Fellows Program
Learn more about our IGB Fellows and the IGB research community....
published: 24 Jan 2011
Author: IGBIllinois
The IGB Fellows Program
Learn more about our IGB Fellows and the IGB research community.
6:34
Evrim Teorisi: Evrim Sadece Bir Teori mi?
evrim teorisi EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalele...
published: 29 Jul 2009
Author: XRazorhead
Evrim Teorisi: Evrim Sadece Bir Teori mi?
evrim teorisi EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University Of Michigan, 304 Alinti 7) Derek A. Roff, The evolution of wing dimorphism in insects, McGill University, 278 Alinti 8) JN Ahearn, Evolution of behavioral reproductive isolation in a laboratory <b>...</b>
5:24
Evrim Teorisi: Bilinçli Tasarım Neden Doğru Değil? 2.Bölüm
Bu videoyu izlemeden once 1.bolumu bu linkten izleyebilirsiniz. www.youtube.com EVRIM TEOR...
published: 16 Feb 2010
Author: XRazorhead
Evrim Teorisi: Bilinçli Tasarım Neden Doğru Değil? 2.Bölüm
Bu videoyu izlemeden once 1.bolumu bu linkten izleyebilirsiniz. www.youtube.com EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University Of Michigan, 304 Alinti 7) Derek A. Roff, The evolution of wing dimorphism in insects, McGill University, 278 Alinti 8) JN Ahearn <b>...</b>
3:28
Evrim Teorisi: Bilinçli Tasarım Neden Doğru Değil? 1.Bolum (Evrim Simülasyonu)
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdak...
published: 24 Mar 2009
Author: XRazorhead
Evrim Teorisi: Bilinçli Tasarım Neden Doğru Değil? 1.Bolum (Evrim Simülasyonu)
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdaki sayfadan ulaşabilirsiniz. www.youtube.com EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University Of Michigan, 304 Alinti 7) Derek A. Roff, The evolution of wing dimorphism in insects, McGill <b>...</b>
3:37
Evrim Teorisi: Geçiş Formları
Bu videonun ingilizce orjinaline asagidaki linkten ulasabilirsiniz. www.youtube.com Videon...
published: 27 Aug 2009
Author: XRazorhead
Evrim Teorisi: Geçiş Formları
Bu videonun ingilizce orjinaline asagidaki linkten ulasabilirsiniz. www.youtube.com Videonun orjinalini yapan corthew'in kanalina da herkese tavsiye ederim. Asagidaki linkten ulasabilirsiniz. www.youtube.com EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University <b>...</b>
2:27
Evrim Teorisini Destekleyen bir Kanıt
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdak...
published: 25 Mar 2009
Author: XRazorhead
Evrim Teorisini Destekleyen bir Kanıt
Bu videonun orijinaline ve evrimle ilgili İngilizce videolara aşağıdaki sayfadan ulaşabilirsiniz. www.youtube.com EVRIM TEORISI ILE ILGILI YAYINLANMIS BILIMSEL MAKALELER: Sirasi ile makalelerin yazarlari, basliklari, universiteleri, ve diger bilim adamlari tarafindan kac defa alintilandiklari asagidadir. Alinti sayisi, makalenin itibariyla dogru orantilidir. Bir makaleden ne kadar fazla alinti yapilirsa, o makalenin itibari o kadar artar. Bu 28 makaleyi ben derledim. Isterseniz bilimsel makale arama motorlarini kullanarak bunlar gibi binlerce bilimsel makaleye ulasabilir ve ozetleri ucretsiz olarak okuyabilirsiniz. 1)George C. Williams, Pleiotropy, Natural Selection, and The Evolution of Senescence, Michigan State University, 1396 Alinti. 2) Russell Lande, Douglas W. Schemske, The evolution of self-fertilization and inbreeding depression in plants. I. Genetic models, University of Chicago, 766 Alinti. 3) Russell Lande, Quantitative genetic analysis of multivariate evolution, applied to brain: body size allometry, University Of Wisconsin, 928 Alinti. 4) Gunter P. Wagner, Lee Altenberg, Complex adaptations and the evolution of evolvability, Yale University, 554 Alinti 5) Russell Lande, Natural Selection and Randon Genetic Drift in Phenotypic Evolution, Harvard University, 539 Alinti 6) Richard D. Howard, The evolution of mating strategies in bullfrogs Rana catesbeiana, University Of Michigan, 304 Alinti 7) Derek A. Roff, The evolution of wing dimorphism in insects, McGill <b>...</b>
0:14
Discovery: Science As A Window To The World - Ricki Lewis
ll4.me Discovery: Science As A Window To The World - Ricki Lewis The goal of Discovery: Sc...
published: 24 Sep 2012
Author: Jeremiah Rooney
Discovery: Science As A Window To The World - Ricki Lewis
ll4.me Discovery: Science As A Window To The World - Ricki Lewis The goal of Discovery: Science as a Window to the World is to relay the excitement of sciene by exploring selected topics in biology and medicine in a way that reveals the process of discovery. Each chapter will focus on the curiosity and creativity that drives scientists to wonder, observe, question and experiment. One impetus for this project is the recognition of a growing demand among instructors for a book that departs from fact-stuffed textbooks and instead engages students in the discovery process at a personal level. Emphasizes the process of discovery through interviews and key experiments. Written by a best-selling author. Provides an in-depth, conversational look at the science behind several "hot topics" in biology. Each chapter traces the beginnings of the field with stories of how serendipity and scientific inquiry intertwine. Presents the background to a field by including the scientific literature-so the reader does not have to do a literature search or plow through a review article. Many essays introduce the work of overlooked scientists or "unsung heroes." Alexey Olovnikov (telomeres), Leroy Steven (stem cells), to name a few. Also, well-known scientists are interviewed: Stanley Miller, Carl Woese, John Gearhart, and others. The essays show how ideas interact and coalesce from different lines of research. Highlights the role of the media in interpreting science for the public.Author: Lewis <b>...</b>
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1:11
Final Jim Davis video.mp4
Spend a minute with IGB Fellow Jim Davis in our newest video series!...
published: 15 Mar 2012
Author: nvasi4
Final Jim Davis video.mp4
Spend a minute with IGB Fellow Jim Davis in our newest video series!
14:15
CORE BIO ENVIRONMENTAL SCIENCES 2
...
published: 18 Sep 2011
Author: mej9000
CORE BIO ENVIRONMENTAL SCIENCES 2
10:51
GTA San Andreas - Mission #80 - Dam and Blast (HD)
Grand Theft Auto: San Andreas Mission Walkthrough Video in High Definition Mission No. 080...
published: 02 Feb 2010
Author: GTASeriesVideos
GTA San Andreas - Mission #80 - Dam and Blast (HD)
Grand Theft Auto: San Andreas Mission Walkthrough Video in High Definition Mission No. 080 Location: Las Venturas, San Andreas Mission Name: Dam and Blast Mission Boss: Casino Heist For more, visit: ● www.gta-series.com ● http
54:41
Jack Szostak (Harvard/HHMI) Part 1: The Origin of Cellular Life on Earth
ibioseminars.org Szostak begins his lecture with examples of the extreme environments in w...
published: 11 Jan 2012
Author: ibioseminars
Jack Szostak (Harvard/HHMI) Part 1: The Origin of Cellular Life on Earth
ibioseminars.org Szostak begins his lecture with examples of the extreme environments in which life exists on Earth. He postulates that given the large number of earth-like planets orbiting sun-like stars, and the ability of microbial life to exist in a wide range of environments, it is probable that an environment that could support life exists somewhere in our galaxy. However, whether or not life does exist elsewhere, depends on the answer to the question of how difficult it is for life to arise from the chemistry of the early planets. Szostak proceeds to demonstrate that by starting with simple molecules and conditions found on the early earth, it may in fact be possible to generate a primitive, self-replicating protocell.
