Cell Theory and Proof

Question 1

Cell theory

Answer 1

1. All organisms are made of one or more cells
2. All cells carry out live activity
3. New cells come from old cells

Question 2

Robert Hooke

Answer 2

First to name cells- found them in cork, thought they looked like rooms of monks

Question 3

Antoine van Leeuwenhoek

Answer 3

First to observe living cells when looking in pond
Found protists
Developed over 400 different microscopes

Question 4

Mathias Schleiden

Answer 4

Observed plants and concluded all plants were made of cells(1830’s)

Question 5

Theodore Schwann

Answer 5

Concluded all animals were made of cells (1838)

Question 6

Louis Pasteur(THIS IS THE GUY AND EXPERIMENT THE IB WANTS)

Answer 6

• Found that “all cells come from other cells”
• Disproved spontaneous generation
• Had broth with an open lid for dust particles to enter; organisms grew in broth
• Broth with filters/openings built so that dust particles could not enter; nothing grew
• Needed outside interference to let bacteria grow inside; bacteria was brought in via dust particles, not spontaneously generated