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Microscopes and cell theory 7.1

Learn how to use a microscope, understand the cell theory, and discover how Robert Hooke and Leeuwenhoek contributed to our knowledge. Explore the difference between prokaryotic and eukaryotic cells.

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Microscopes and cell theory 7.1

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  1. Microscopes and cell theory7.1 Objective: You will be able to properly use a microscope, explain cell theory and how Hooke and Leeuwenhoek contributed to this knowledge.

  2. How Hooke contributed: • Robert Hooke used an early compound microscope to look at plant material and coined the term “cells” in 1665 • Cells reminded him of his tiny room at the monastery- also called a cell

  3. How Leeuwenhoek contributed: • Leeuwenhoek was the first to see many things under a microscope (organisms in pond water)

  4. Cell Theory- • 1- all living things are composed of cells • 2- cells are basic unit of structure and function in living things • 3- new cells are produced by existing ones

  5. Microscopes • Better microscopes = scientists make more discoveries • Electron microscopes can see 1000 xs smaller than regular microscopes

  6. Microscopes • Using microscopes we have been able to tell the difference between two types of cells: 1.Prokaryotes 2. Eukaryotes

  7. Cells • Prokaryotes- no nucleus, generally smaller and simpler than eukaryotes. Ex: bacteria • Eukaryotes- nucleus, where genetic info is stored. More complex and varied. Ex: plants, animals, fungi and protists. YOU!

  8. Any Questions???

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