Biology Unit 3: Cell Structure and Function Flashcards
What are all living things composed of?
One or more cells
When was the word “cell” used to describe cells?
Late 1665
Who was the word “cell” first used by?
Robert Hooke
Why was is called cells?
“It seemed to be made on tiny, empty chambers.”
Who made many simple microscopes?
Anton van Leeuwenhoek
How may times greater magnifications did this microscopes have in comparison to the one used by Hooke?
10x greater
Leeuwenhoek discovered a tiny world of what?
Microorganisms
In what did Leeuwenhoek find this tiny world of microorganisms?
A drop of water
What did Leeuwenhoek call these microorganisms?
“Little beasties”
What was Leeuwenhoek the first to accomplish?
He was the first to see and describe microorganisms under a microscope.
What was Matthias Schleiden’s occupation?
A German botanist
What did Schleiden conclude?
Schleiden concluded that all plant tissues were composed of cells.
What was Theodore Schwann’s occupation?
A German zoologist
What did Schwann conclude?
Schwann concluded that all animals were composed of cells.
In ________, _____ _______ noted that cells could only arise from _____________.
1858, Rudolph Virchow, preexisting cells
What is the first part of the cell theory?
All living things are composed of cells.
What is the second part of the cell theory?
Cells are the basic units of structure and function in living things.
