Scientists
Who observed bark of cork tree and discovered cells.
Robert Hooke
What is a cell?
Name the first idea of Cell Theory.
All organisms are composed of cells.
What function uses chemical reactions to break down the food we eat?
Metabolism
Which function obtains food to provide energy for growth?
Nutrition
Who was the first person to observe bacteria and protozoa?
Anton van Leeuwenhoek
What are the two main types of cells?
Prokaryote and Eukaryote
Name the second idea of Cell Theory.
Cells are the basic unit of life.
Which function perceives and responds to the changes in the environment?
Response
Which function protects against enemies?
Defense
Who concluded that all plant tissues are composed of cells?
Mathias Schleiden
What does unicellular mean?
Name the final idea of Cell Theory.
All cells result from the division of previously existing living cells.
Which function keeps conditions balanced inside the organism?
Homeostasis?
What is a prokaryote?
A microscopic single-celled organism that does not have a nucleus.
Who concluded that all animal tissues are composed of cells?
Theodor Schwann
What does multicellular mean?
Multiple cells
Who came up with the third part of Cell Theory
Rudolph Virchow
Which function increases the size?
Growth
What is a eukaryote?
An organism that has a nucleus.
Who proposed the third part of Cell Theory?
Rudolph Virchow
What is the basic unit of life?
Cells
Who came up with the first 2 ideas of Cell Theory?
Mathias Schleiden and Theodore Schwann
Which function produces offspring?
Reproduction
What is a protozoa?
One-celled animals.