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Introduction to the cell theory

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I'm on from living science it's hard to tell what most people used to think about what life was made of or how it worked on the scale of human history it wasn't that long ago that nobody had any idea where what's an animal's just magically animated matter according to the old belief in vitalism seems a lot of people used to think so then in the year 1595 a father-and-son team Hans and Zacharias Janssen we're making eyeglasses in the Netherlands and they figured out how to align and combine the lenses to look at things far away or close they might have invented the first telescope and the first microscope when they could magnify up to 9 X actual size that changed everything these to invent were they must have apparatus for scientist everywhere while the telescope could show us a better view world's we usually already knew about the microscope revealed a whole other gold within our world that no one knew was even there  taking advantage of this new technology required to Scientific mind in the Age of Enlightenment England's Robert Hooke was reported to be one of the best he was already an accomplished scientist in many different fields chemistry astronomy biology and physics among the others it was an inventor in an architect and an artist hook got a hold of him microscope and started looking at all sorts of tiny things and drawing large and detail accurate picture what he saw these included insects and other barely visible organisms including the first examinations of microfossils  in 1660 if you pop the cork off a bottle and wanted to see what the spongy kind of would really look like up close so we took a very thin slice of it and examine it under his microscope and you know what is the structure was composed of cellular small compartments walled-in on all sides like little dorm rooms so we called these compartments cells of course the cork was dead Woods it wasn't anything left to see but the walls of those empty cells in the first person to see a living cell under a microscope was an acquaintance of hooks Anthony Vine it was a Tradesman and Craftsman with no formal education yet he to prove to be an enthusiastic scientist he was also an expert LensCrafter images old microscopes hundreds of them and they were better than anything before with better lighting and sharper images capable of up to 270 times magnification so he was able to see individual blood cells nematodes protozoans and other tiny organisms that no one ever knew about before can you call Ray's minut moving microbes animalcules like animal molecules and a molecules animalcules he was also the first to Glimpse the largest domain of Life which it been ever present everywhere yet invisible and utterly unknown until that time bacteria which he discovered in Dental scrapings from people who never brushed their teeth like a good scientist Leeuwenhoek Humanities observations in precise detail and begin a 50-year correspondence with the Royal Society the first organization ever dedicated exclusively to the placement of science his Works were published and widely distributed in multiple languages and he was eventually even elected as a full member of the Royal Society sing he did not document was how to make these lenses away he did so when he died in 1723  will be more than 100 years before anyone figures how to make microscopes that will again  in 1805 a German philosopher and biologists Lawrence open used his microscope to conclude that all sing beans originate from and consists of vesicles or cells and this might have been the first expression of cell theory but the Acura in the importance of his comment hadn't yet been recognized or confirmed the next important player was he young Scottish scientist named Robert brown brown was the first Timothy internal workings of plant cells around 1833 he was the first to identify the nucleus and he recognized it as an opaque spot near the middle of all Zales in 1837 Matthias schleiden German professor of Botany and Theodor Schwann bills and professor of physiology we're sitting together talking your microscopes  sliding recognize its nucleus was the most important part of plant cells Schwann noticed the similarities between plant cells and certain animals is he had seen with his microscope but animal cells are varied and not as easy to recognize his plant cells so we didn't realize that that's what they were until Slidin go dim the most important to diagnostic feature of the cells as they understood it they went to their microscope and identified the nucleus and what was now confirmed to be animal cells If plants were made of cells in animals were made of cells and that meant that the cell was the most basic unit of life ended all living things were made of them didn't know that protists were neither plant nor animal back in their time everything was animal mineral or vegetable and they thought protozoans were animal old because they were adamant and I thought that mold algae and fungus would like a sort of plant so if all plants were made of cells with a nucleus then if animal are made of cells to they would have to have a nucleus  didn't yet know that bacteria was something else entirely and that not every cell had a nucleus it doesn't make any difference here because their assessment is still correct all life is made of cells even cells without a nucleus like bacteria and archaea which wasn't discovered until the 1970s haven't confirmed the fact of the matter schleiden and Schwann established the cell theory of biology and their observations were meet be confirmed by many other side as with all been apparently discovering more less the same thing at about the same time now the argument was where did cells come from thought that cells were just crystallized out of surrounding material has had been suggested by another sinus years earlier then Rudolf virchow stepped in notice the father modern pathology this Prussian physician had made a career out of dispelling pseudoscience woo and he knew that sells didn't pop into existence out of nothing and other doctors had observed gametes cells and witness the rip productive process under a microscope they knew that cells divide into new cell so in 18 58 Rudolf virchow propounded the third dictum of cell theory that all cells come from other cells  at least with the basic tenets of so named because the constituent components of cork look like six-sided compartments plant cells have walls animal cells don't animal cells more like bubbles or Globs of Goo so they animal cells have been discovered first we wouldn't be talking about cell theory we'd be talking about Bubba Siri you are the theory of globules but whatever you call them all living things are made of them they're the structural and functional unit of all living things can you come from pre-existing cells by division

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Introduction to the cell theory

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