Cell Biology

1
Cell Biology

• Spontaneous Generation
• Cell Theory
• Cell Structure
• Organelle Function

2
Spontaneous Generation Theory

• Living Things Can Come From Non-Living Things

3
Are you Redi?

• Mid 1600s, Franceso Redi hypothesized that flies
  do not come from rotting meat---
• But have their own life cycle and come from other
  flies
• He did an experiment
• He disproved that flies do not come from rotting
  meat

4
Redis Set-Up
5
Spallanzanis Broth Experiment

• Scientific community says, Micro-organism must
  spontaneously arise from a vital force.
• 1700s, Lazzaro says, No Way!
• Did the broth experiment
• His results were conclusive, but fellow
  scientists did not except his findings

6
(No Transcript)
7
Pasteurs Experiment
8
Biogenesis Theory

• Life comes from other life
• Oh, Oh!
• So where did the first life come from?
• Forever, will we debate this!
• Evolution vs. Adaptation

9
Anton van Leeuwenhoek

• Dutch microscope maker
• 1675 first observed living cells under a
  microscope
• Wasnt sure what he was looking at

10
Robert Hooke

• First to officially observe plant cells under the
  microscope, 1665
• Observed Cork Cells
• They looked like monks quarters
• He called them cells

11
Matthias Schleiden

• German Botanist
• 1838, concluded that all plants were composed of
  cells

12
Theodore Schwann

• German Zoologist
• 1839, all animals are made of cells

13
Dr. Rudolf Virchow

• Physician instrumental in the study of pathology
• Studying how disease affects living things
• Studied cells
• Said all cells come from other cells

14
Cell Theory

• All living things are made of cells
• Cells are the basic unit of structure and
  function
• All cells come from other cells

15
Cell Structure