Aim: How did the invention of the microscope lead to the idea of cell theory? Do Now: Why are microscopes important? Name one thing I can use a microscope to see that I may not be able to see with my eyes alone?

Cells The smallest unit that can perform all life processes Aim: How did the invention of the microscope lead to the idea of cell theory?

This invention revolutionized humanity’s understanding of what organisms are made of! CELLS! Aim: How did the invention of the microscope lead to the idea of cell theory?

Scientists and the Cell Theory Aim: How did the invention of the microscope lead to the idea of cell theory?

Robert Hooke Born: July 18, 1635 Died: March 3, 1703 Wrote and published “Micrographia” Known as the “English Father of Microscopy” First scientist to use a microscope to see “small things.” Aim: How did the invention of the microscope lead to the idea of cell theory?

Robert Hooke Contributions: - He observed pieces of cork from the bark of a cork tree under the microscope. - His observations led him to coin the word “cell.” - “Cell”- means little rooms in Latin - He compared the small boxes to the small rooms that monks lived in. ession1/closer1.html Aim: How did the invention of the microscope lead to the idea of cell theory?

Anton van Leeuwenhoek Born: October 24, 1632 Died: August 30, 1723 He is known as the “Father of Microscopy.” Wanted to see if there was small things in water, milk, and other substances. Aim: How did the invention of the microscope lead to the idea of cell theory?

To his surprise, Leeuwenhoek discovered tiny living things in pond water, milk and other substances! Aim: How did the invention of the microscope lead to the idea of cell theory?

Anton van Leeuwenhoek Discoveries: : He looked at pond scum under the microscope and discovered small organisms he called animalcules or little animals (Protists) : discovered bacteria hap09/lesson_protista/Protista_Lesson.html#Algae Aim: How did the invention of the microscope lead to the idea of cell theory?

Leeuwenhoek was the first person to observe bacteria under a microscrope. Besides bacteria, I also observed muscle fiber, Capillaries (tiny blood vessels) and spermatozoa! Aim: How did the invention of the microscope lead to the idea of cell theory?

These are some of his drawings from his studies. Aim: How did the invention of the microscope lead to the idea of cell theory?

Matthias Schleiden Born: April 5, 1804 Died: June 23, 1881 German botanist Discovered that all plants were made of cells Contributed to the creation of the cell theory /Mathias-Jacob-Schleiden Aim: How did the invention of the microscope lead to the idea of cell theory?

Theodor Schwann Born: December 7, 1810 Died: January 11, 1882 German zoologist Concluded that all animals are made of cells. Contributed to the creation of the cell theory Aim: How did the invention of the microscope lead to the idea of cell theory?

Rudolph Virchow Born: October 13, 1821 Died: September 5, 1902 German pathologist He is known as the “Father of Pathology.” Discovered that all living cells come only from other living cells. Aim: How did the invention of the microscope lead to the idea of cell theory?

The Cell Theory Major Contributors: Matthias Schleiden Theodor Schwann Rudolph Virchow Aim: How did the invention of the microscope lead to the idea of cell theory?

Together all these scientists contributed to the three rules of cell theory. None of this would be possible without the microscope. Aim: How did the invention of the microscope lead to the idea of cell theory?

The Cell Theory 1.All living things are made of cells. 2.Cells are the basic units of structure and function in all living things. 3.Living cells come only from other living cells. Aim: How did the invention of the microscope lead to the idea of cell theory?

Since, Hooke, Leeuwenhoek, Schleiden…. et al, microscope technology has improved tremendously… Aim: How did the invention of the microscope lead to the idea of cell theory?

Today we have: compound light microscopes and electron microscopes. Aim: How did the invention of the microscope lead to the idea of cell theory?

Compound light microscopes magnifes the light reflecting off microorganisms. can be used to view living specimens. Can’t magnify really small things. Aim: How did the invention of the microscope lead to the idea of cell theory?

Electron microscopes: developed in the 1940’s stronger microscope to see tiny cell parts. Helps scientists see very small things, like the inside organelles of cells. Aim: How did the invention of the microscope lead to the idea of cell theory?

Activity In your pairs answer the following questions. You will have 5 minutes. Be prepared to share out. Aim: How did the invention of the microscope lead to the idea of cell theory?

Exit Slip Explain in a three sentences (using evidence from your notes) Why the invention of the microscope was not an individual accomplishment. (to be collected by Ms. Gelman) Aim: How did the invention of the microscope lead to the idea of cell theory?

Activity. Specimen #Description of specimen Drawing of specimen Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen1: red blood cell Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 2: a macrophage & a bacillus bacteria Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 3: blastocyte Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 4: skeletal muscle Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 5: spermatozoa Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 6: pollen? Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 7: an amoeba Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 8: bacilli bacteria Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 9: spirogyra? Aim: How did the invention of the microscope lead to the idea of cell theory?

Specimen 10: streptococcal bacteria. Aim: How did the invention of the microscope lead to the idea of cell theory?