Biology Notes about Microscopes, Scientists, and Cells.

Microscopes were invented in the 1600s. Robert Hooke first looked at a thin disappearing of cork in 1665; he saw a deal of little boxes. These little boxes first reminded of the little rooms monks lived in, so he called them booths. Hooke observed the same pattern in the stems and musical theme of carrots and other plants. What Hooke still did not know, however, was that kiosks atomic number 18 the basic units of nutrition things. Ten twelvemonths later, the Dutch scientist Anton van Leeuwenhoek focused a microscope on what seemed to be clear pond water and observed a wondrous world of living creatures. He named the little animals animalcules. It took scientists much than 150 yrs. to waxy appreciate the discoveries of Hooke and Leeuwenhoek. In 1838, the German botanist Matthias Schleiden concluded that cells compose not alone the stems and root however every part of a plant. A year later, the German zoologist Theodor Shwann made the same claim approximately animals. And in 1858, a German physician Rudolph Virchow observed that cells arrive only from other cells. The observations of Shleiden, Shwann, and Virchow form what is known today as the cell theory. The cell theory is stated in terzetto move: 1.All living things are composed of one or to a greater extent cells. 2.In organisms, cells are the basic units of grammatical construction and function. 3.Cells are produced only from be cells. All cells, even those that are very simple, all share real characteristics. All cells vacate a cell membrane or plasma membrane, which separates the cells table of contents from materials step forwardside the cell. The cell membrane carewise determines what goes in and out of the cell, helping to maintain homeostasis.

Without the cell membrane, the cell would die, because it would loose the substances it inescapably to maintain life. All cells have a... These are close to beautiful darn meticulous notes. The majority of ccmustangs2001 notes read well-nigh like decent essays...so it goes without saying that these are quite informatory and a splendid research resource. Excellent Job, ccmustangs2001. I will be taking bio 2 this school year because my counselor micturate tongue to I would love it. -_-. sigh. Thanks to you now i have something to refer to other that our beat up schoolbook books and our raging caffeine addict bio teacher. =) If you want to get a full essay, order it on our website: OrderEssay.net

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