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The Development of the Cell Theory

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  1. The Development of the Cell Theory Biology 11 Prepared by: Ms. Bowie

  2. The _______ __________ States: • As written by Rudolph __________ (1821-1902): • All living organisms are made of one or more _______. • Cells are the basic units of ____________________ & ______________________ in all organisms. • All cells come from ______________________________. • The activity of an entire organism depends on the total activity of its independent cells.

  3. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 334 B.C.E - ____________________ • Greek philosopher, Aristotle, begins to observe nature. • He classifies all known organisms as either: • ___________________ or _______________________. • He writes that living things can arise _________________________ from ______________________matter.

  4. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1268 – 1st_____________________________ • Roger __________________, an English friar makes reference to a pair of eye glasses. • This means that _________________ is being developed and used in a way that makes it easier to see small things.

  5. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1590 – 1st ______________________ • Zacharias _________________, a Dutch eyeglass maker, makes the 1st ___________________________ by placing two ____________________ on top of one another to make extra-large images.

  6. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1665 – 1st ____________________ Seen • Robert ______________ (1635-1703) publishes a book that shows illustrations of tree bark lining as seen through a simple compound (2 lens) microscope. • He coined the term “Cell” because the boxes he saw in the cork looked like the ____________________________ which were known as _____________

  7. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1668 – 1st Experiments about origins of maggots • Francesco ______________ (1626-1697) conducts experiments to prove that maggots do not appear in meat if flies cannot land on it! • Good-bye idea of ____________________ ___________________________ William Harvey English Physician 1578-1657

  8. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1674 – 1st _________________________________________Seen! • Anton van _____________________________ (1632-1723) reports being able to see tiny beasties (0.002 mm) using a simple single-lens microscope. • Now we have discovered that microscopic organisms exist.

  9. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1753 – Birth of Classification • Carolus Linnaeus (1707-1778) begins to show people the great diversity of living things by exploring methods of classifying them into 5 main Kingdoms. • Again, it took about 2000 years to “correct” Aristotle’s notion of a 2 kingdom system of classification. • By the way – we now have a 6 kingdom system!

  10. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1770 – Advancement of Microscopes • Microscopes become sturdier and easier to use. • Flaws in glass production still causes images to be blurry and have coloured halos.

  11. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1800’s – Support for Science Grows • Lots of interest in science • Public lectures are popular • The wealthy mount expeditions to collect new specimens • The HMS Investigator goes on a 5 year voyage of discovery.

  12. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1809 – 1st Science Texts for Students • Jane Haldimand (1769-1858) writes textbooks for young people to learn about science. • Terms such as “cell”, “cellular system” and “Cellular tissue” appear in the book.

  13. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1820’s – Better Glass = Better Lens • Microscope quality improves with the production of better glass. • Many English companies compete to produce the best microscope.

  14. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1825 – Book “Cells from Cells” • Francois Vincent Raspail (1794-1878) wrote a book called (translated from Latin) “Every cell is derived from a preexisting cell”. • This again puts to rest the idea of spontaneous generation.

  15. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1831 – ________________of Cell Found • Robert ______________________ (1773-1858) is the 1st to consider the ____________________ as a regular part of a living cell. • The nucleus is still hard to see though without the invention of the electric light for his microscope.

  16. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1838 – _________________ cells! • Matthias Jacob _____________________ (1804-1881) makes the claim “All __________________ are made of _________________”. • Cells are alive!

  17. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1839 – _________________ cells! • Theodor ________________ (1810-1882) makes the claim “All _____________are made of cells”. • “All living things are made of cells” • Cells are ___________________ ______________________of life!

  18. Timeline of the discoveries, thoughts and technologies that led to the development of the Cell Theory 500 BCE 1000 1600 1800 300 BCE 1500 1700 1900 1858 – ____________________ Outlined • Rudolph ______________________ (1821-1902) develops his _________ Theory that is still largely accepted today.