Cell Theory Flashcards
3 Postulate of Cell Theory
- All living things are composed of one or more cells.
- The basic unit of life is the cell.
- All cells arise from pre-existing cells.
The fundamental concept of biology that describes the basic unit of life.
The Cell Theory
Provides insights into the structure, function, and origin of living organisms
The Cell Theory
The date which Hans and Janssen created the compound microscope
1590’s
Dutch spectacle makers invented the first so-called COMPOUND MICROSCOPE
Hans and Zacharias Janssen
What did Hans and Janssen invented?
The Compound Microscope
Used a compound microscope to observe cork cells
Robert Hooke
Date which Robert Hooke observed the cork cells or dead cells
1665
Robert Hooke described the microscopic structure of a cork cell which he eventually named “cellulae” that means?
Small Rooms
If the structure of the cork cells are called “small rooms” in english, what is the latin word ?
Cellulae
Date which Leeuwenhoek observed single-celled microorganisms
1674
Who is the Scientist that first to observed singled-celled microorganisms
Antonie Van Leeuwenhoek
What is the name of a single-celled microorganism?
Animalcules
What are the other observation with detailed descriptionof Antonie Van Leeuwenhoek?
Bacteria, Protozoa, and other microorganisms
Scottish Botanist who observed a structure within the plant cells that appeared as a distinct, centrally located body
Robert Brown
What date did Robert Brown discovered the nucleus?
1831
What Latin word did Nucleus came from?
Kernel
What does Kernel means?
Nucleus
French Biologist who said that protozoans has a gelatinous fluid, a life substance called “Sarcode”
Felix Dujardin
Date which Felix Dujardin found the Sarcode
1835
Later recognized as the protoplasm or cytoplasm of the cell
Sarcode
Coined the term “protoplasm”
Jan Evangelista Purkinje
Date which Jan Evangelista Purkinje coined the term protoplasm
1839
Describes the contents of the cell
Protoplasm
Proposed that the cell is the basic unit of structure in PLANTS
Matthias Jacob Schleiden
When did Matthias Jacob Schleiden proposed his idea?
1838
When did Theodor Schwann proposed his idea?
1839
Proposed that the cell is the basic unit of structure in ANIMALS
Theodor Schwann
What are the 2 main postulates proposed by Schleiden and Schwann in 1839?
- All living things are composed of one or more cells.
- The basic unit of life is the cell.
The scientist who said “omnis cellula e cellula”
Rudolph Virchow
Omnis Cellula e cellula
All cells arise from pre-existing cells
When did Rudolph Virchow said his famous stateme?
1855
Modern Version of the Cell Theory
- Energy flows occurs within cells.
- Hereditary information (DNA) is passed from cell to cell
- All Cells have the same basic chemical composition (Lipids, Carbohydrates, Nucleic Acid, Proteins)
Discovered that heat kills germs
Louis Pasteur
When did Louis Pasteur discovered that heat kills bacterias?
1862
Walther Flemming
Meticulous observation of the cell division (mitosis)
When did Walther Flemming observed the cell division?
1882
He invented the first electron microscope
Ernst Ruska
When did Ernst Ruska invented the first electron microscope
1931
