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Discovering Cells 1-1

Discovering Cells 1-1. All living things are made of cells. In the human body there are about 30 trillion cells. 30,000,000,000,000. 1 trillion seconds = 32,000 years 30 trillion seconds =960,000 years. Cells are the basic units of structure and function in living things.

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Discovering Cells 1-1

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  1. Discovering Cells 1-1

  2. All living things are made of cells.

  3. In the human body there are about 30 trillion cells. 30,000,000,000,000 1 trillion seconds = 32,000 years 30 trillion seconds =960,000 years

  4. Cells are the basic units of structure and function in living things. Heart cellsLeaf cells

  5. The functions of organisms include: • Obtaining oxygen • Getting rid of waste • Obtaining food • Growing • Reproducing

  6. The invention of the microscope made it possible for people to discover cells. Simple Compound

  7. Robert Hooke 1665 First person to observe and name dead cells in cork. 

  8. Anton van Leeuwenhoek 1674 First to observe living cells in a drop of water.

  9. Matthias Schleiden 1838 Stated that all plants are made up of cells.

  10. Theodor Schwann 1839 Said the cell is the basic unit of structure in animals

  11. Rudolph Virchow 1855 Said all living cells come from other living cells

  12. Magnification is the ability to make things look larger than they are Tic

  13. A convex lens bends light inward to magnify the image.

  14. A compound microscope uses two convex lenses.

  15. Resolution is the ability to clearly identify the individual parts of an object.

  16. Electron microscopes use a beam of electrons instead of light.

  17. Images from an electron microscope Can you identify these specimen?

  18. pollen bacteriaspider white blood cell

  19. How big are cells?

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