Concept of Cell Theory Flashcards
Concept of Cell Theory
How it all started?
Romans - when Romans discovered they were able to make glass in the 1st century BC, things changed for the better.
he figured how to grind glass together and decided to experiment. He made his own 270x magnification compound microscope. Today, microscopes magnifications range from 200x-10,000,000x magnification.
Anton Van Leeuwenhoek
A set of principles developed over time via multiple investigations. The discovery of the cell was made through the invention of the microscope between 1665-1838.
Theory
There are 3 major parts of the cell theory:
1. All organisms are made of cells.
2. All existing cells are produced by other living cells.
3. The cell is the most basic unit of life.
Day 1 Cell Theory
Contributors
There are 5 contributors to the cell theory:
- Robert Hooke
- Anton van Leeuwenhoek
- Matthias Schleiden
- Theodor Schwann
- Rudolf Virchow
Each of the above contributors produced evidence through investigations and experiments that led to today’s cell theory.
Used the compound microscope to observe cork.
observed that cork is composed of small, hollow compartments.
The parts prompted him to think of small rooms (cells) in a monastery, so he gave them the same name: CELLS.
Investigated cork through experimenting with the compound
microscope and came up with the name cells.
Key Note: he discovered the cell in 1665, which started formulating the cell theory.
Robert Hooke (English Scientist)
- is obtained from the cork oak or Quercus suber, one of the 300 known species of oak, which is widespread throughout the Mediterranean, especially in coastal areas
Cork
- a house or place of residence occupied by a community of persons, especially monks, living in seclusion under religious vows.
Monastery
Study new approaches for creating lenses to observe cloth.
His microscope was more powerful than Hooke’s
compound microscope.
From investigating and experimenting with his microscope,
He became one of the first scientists to refer to living cells when he observed an abundant number of single-celled organisms, which he called animalcules (plant & animal), swimming in a drop of pond water.
Anton van Leeuwenhoek (Dutch Tradesman)
Fascinated with plant cells, he used the compound microscope and studied plant cells.
From investigating and experimenting with plants, projected
plant parts are made of cells.
Discussed what he observed with his dear friend, German scientist Theodor Schwann.
Matthias schleiden (German Scientist)
Studied plant & animal cells, and was intrigued by the similarities between the two.
From investigating and experimenting with plant & animal cells,
He was able to determine that all animals are made of cells.
He published the 1st statement of the cell theory: all living
things are made of cells and cell products
Theodor Schwann (German Scientist)
Based on his investigations and experiments, he stated that all cells come from preexisting cells, which is the 2nd part of the cell theory: all existing cells are produced by other living cells.
Key Note: After he completed his work, the cell theory was finally formulated in 1838.
Rudolf Virchow
- came up with the name cells.
Robert Hooke
- referred to living cells called
animalcules (plant & animal) after observing a drop of pond
water.
Anton Van Leeuwenhoek
- projected plant cells are made of cells.
Matthias Schleiden
- determined all animals are made of cells (1st statement of the cell theory).
Theodor Schwann
- stated all cells come from preexisting cells (2nd statement of the cell theory).
Rudolf Virchow
Key Note: It took over ___ years for the cell THEORY to be formulated.
173
