Transcript Cell Theory - Teacher Pages

SC.912.L.14.1
Benchmark Review
Molecular and Cellular Biology
Cell theory and its History and Discovery
to the Process of Science
SC.912.L.14.1
Cell Theory
• The Cell Theory is one of the basic principles of
biology
• Credit for the formulation of this theory is given
to:
– Theodor Schwann
– Matthias Schleiden
– Rudolph Virchow
• History of studying cells
– Human eyes are limiting
• Early biological research concentrated on developing tools to
help see microscopic things
• Imaging technology became more sophisticated
– biological discoveries abounded
– Such as bacteria and fungi
SC.912.L.14.1
Cell Theory
• The Cell Theory states:
– All living organisms are composed of cells; either
unicellular or multicellular
– The cell is the basic unit of life
– Cells arise from pre-existing cells
• The modern version of the Cell Theory includes
ideas that:
– Energy flow occurs within cells.
– Heredity information (DNA) is passed on from cell to cell
– All cells have the same basic chemical composition
SC.912.L.14.1
Cell Theory
Which of the following “organisms” is considered to
be an exception to the cell theory?
A. bacteria
B. viruses
C. amoeba
D. yeast
Why do you think it’s ____________?
How did you come to that answer?
Materials:
Reference materials (textbook and Internet pages)
rulers
paper
colored pencils
Student Procedures:
Research the following people: list some of their contributions to science and dates of these
contributions
Robert Hooke
Hans and Zacharias Janssen
Anton van Leeuwenhoek
Matthias Schleiden
Theodor Schwann
Rudolph Virchow
1. Draw a timeline showing the chronological order of these scientists and their contributions.
2. Label the timeline with dates of the above scientists' discoveries.
3. Label each date with the corresponding scientist's name and contribution(s) in an organized
and legible manner.
Be sure your spacing shows a reasonable approximation of the amount of time elapsed between
dates.