Discovering Cells
Key Terms
• Cell
• Microscope
• Cell theory
• Define these Cornell style in your interactive
notebooks
• http://cellsalive.com/
An overview of Cells
• You are made of Cells
• CELLS ARE THE BASIC UNITS OF STRUCTURE
AND FUNCTION IN LIVING THINGS
• Cells form the parts of an organism and carry
out all its functions
What are some functions that cells
perform in living things?
•
•
•
•
Cells get oxygen
Get rid of wastes
Obtain food
Grow
Robert Hooke
• One of the 1st people to observe
cells
• Observed cork cells under
the microscope
• Reminded him of the “cells”
monks used in monasteries
• The word cell means
“small room”
Anton Van Leeuwenhoek
• Another scientist observing tiny objects under
microscopes
• He observed lake water, scrapings from his
teeth and gums,
water from rain gutters,
and tiny, moving organisms
that he named animalcules
Cell Theory
• The Cell Theory states the following (write
down):
–All living things are composed of cells
–Cells are the basic units of structure
and function in living things
–All cells are produced from other
cells